21614731402446 has 256 divisors, whose sum is σ = 62329344000000. Its totient is φ = 5391818462592.

The previous prime is 21614731402399. The next prime is 21614731402469. The reversal of 21614731402446 is 64420413741612.

21614731402446 is a `hidden beast` number, since 2 + 1 + 61 + 4 + 7 + 3 + 140 + 2 + 446 = 666.

It is a super-2 number, since 2×21614731402446² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57606555 + ... + 57980553.

It is an arithmetic number, because the mean of its divisors is an integer number (243474000000).

Almost surely, 2^{21614731402446} is an apocalyptic number.

21614731402446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21614731402446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31164672000000).

21614731402446 is an abundant number, since it is smaller than the sum of its proper divisors (40714612597554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21614731402446 is a wasteful number, since it uses less digits than its factorization.

21614731402446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374668 (or 374662 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 21614731402446 in words is "twenty-one trillion, six hundred fourteen billion, seven hundred thirty-one million, four hundred two thousand, four hundred forty-six".