20471010532247 has 16 divisors (see below), whose sum is σ = 22406183628192. Its totient is φ = 18548218984320.

The previous prime is 20471010532241. The next prime is 20471010532279. The reversal of 20471010532247 is 74223501017402.

It is a cyclic number.

It is not a de Polignac number, because 20471010532247 - 2⁸ = 20471010531991 is a prime.

It is a super-2 number, since 2×20471010532247² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20471010532247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471010532241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20621873 + ... + 21591749.

It is an arithmetic number, because the mean of its divisors is an integer number (1400386476762).

Almost surely, 2^{20471010532247} is an apocalyptic number.

20471010532247 is a deficient number, since it is larger than the sum of its proper divisors (1935173095945).

20471010532247 is a wasteful number, since it uses less digits than its factorization.

20471010532247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976258.

The product of its (nonzero) digits is 94080, while the sum is 38.

Adding to 20471010532247 its reverse (74223501017402), we get a palindrome (94694511549649).

The spelling of 20471010532247 in words is "twenty trillion, four hundred seventy-one billion, ten million, five hundred thirty-two thousand, two hundred forty-seven".