16311451323656 has 64 divisors (see below), whose sum is σ = 31362644093760. Its totient is φ = 7950682080000.

The previous prime is 16311451323649. The next prime is 16311451323659. The reversal of 16311451323656 is 65632315411361.

It is a super-3 number, since 3×16311451323656³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16311451323656.

It is not an unprimeable number, because it can be changed into a prime (16311451323659) 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, 115834811 + ... + 115975541.

It is an arithmetic number, because the mean of its divisors is an integer number (490041313965).

Almost surely, 2^{16311451323656} is an apocalyptic number.

It is an amenable number.

16311451323656 is a deficient number, since it is larger than the sum of its proper divisors (15051192770104).

16311451323656 is a wasteful number, since it uses less digits than its factorization.

16311451323656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143046 (or 143042 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 47.

The spelling of 16311451323656 in words is "sixteen trillion, three hundred eleven billion, four hundred fifty-one million, three hundred twenty-three thousand, six hundred fifty-six".