15202161265656 has 64 divisors (see below), whose sum is σ = 40012330320000. Its totient is φ = 4799885371776.

The previous prime is 15202161265619. The next prime is 15202161265663. The reversal of 15202161265656 is 65656216120251.

It is a super-2 number, since 2×15202161265656² (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 15 ways as a sum of consecutive naturals, for example, 15586 + ... + 5514033.

It is an arithmetic number, because the mean of its divisors is an integer number (625192661250).

Almost surely, 2^{15202161265656} is an apocalyptic number.

It is an amenable number.

15202161265656 is an abundant number, since it is smaller than the sum of its proper divisors (24810169054344).

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

15202161265656 is a wasteful number, since it uses less digits than its factorization.

15202161265656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535676 (or 5535672 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

It can be divided in two parts, 1520216 and 1265656, that added together give a palindrome (2785872).

The spelling of 15202161265656 in words is "fifteen trillion, two hundred two billion, one hundred sixty-one million, two hundred sixty-five thousand, six hundred fifty-six".