15436618479980 has 12 divisors (see below), whose sum is σ = 32416898808000. Its totient is φ = 6174647391984.

The previous prime is 15436618479977. The next prime is 15436618480013. The reversal of 15436618479980 is 8997481663451.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385915461980 + ... + 385915462019.

It is an arithmetic number, because the mean of its divisors is an integer number (2701408234000).

Almost surely, 2^{15436618479980} is an apocalyptic number.

15436618479980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15436618479980 is an abundant number, since it is smaller than the sum of its proper divisors (16980280328020).

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

15436618479980 is a wasteful number, since it uses less digits than its factorization.

15436618479980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771830924008 (or 771830924006 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 71.

The spelling of 15436618479980 in words is "fifteen trillion, four hundred thirty-six billion, six hundred eighteen million, four hundred seventy-nine thousand, nine hundred eighty".