20124641516 has 72 divisors (see below), whose sum is σ = 41145118560. Its totient is φ = 8436856320.

The previous prime is 20124641513. The next prime is 20124641543. The reversal of 20124641516 is 61514642102.

It is a super-2 number, since 2×20124641516² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20124641513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24275390 + ... + 24276218.

It is an arithmetic number, because the mean of its divisors is an integer number (571459980).

Almost surely, 2^20124641516 is an apocalyptic number.

It is an amenable number.

20124641516 is an abundant number, since it is smaller than the sum of its proper divisors (21020477044).

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

20124641516 is a wasteful number, since it uses less digits than its factorization.

20124641516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 20124641516 in words is "twenty billion, one hundred twenty-four million, six hundred forty-one thousand, five hundred sixteen".