15616616201204 has 12 divisors (see below), whose sum is σ = 27384738392928. Its totient is φ = 7792405231800.

The previous prime is 15616616201203. The next prime is 15616616201261. The reversal of 15616616201204 is 40210261661651.

It is a super-2 number, since 2×15616616201204² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15616616201201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975714992 + ... + 3975718919.

It is an arithmetic number, because the mean of its divisors is an integer number (2282061532744).

Almost surely, 2^{15616616201204} is an apocalyptic number.

It is an amenable number.

15616616201204 is a deficient number, since it is larger than the sum of its proper divisors (11768122191724).

15616616201204 is a wasteful number, since it uses less digits than its factorization.

15616616201204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951434406 (or 7951434404 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

Adding to 15616616201204 its reverse (40210261661651), we get a palindrome (55826877862855).

The spelling of 15616616201204 in words is "fifteen trillion, six hundred sixteen billion, six hundred sixteen million, two hundred one thousand, two hundred four".