23216166661731 has 16 divisors (see below), whose sum is σ = 31000806064800. Its totient is φ = 15454488358400.

The previous prime is 23216166661703. The next prime is 23216166661781. The reversal of 23216166661731 is 13716666161232.

It is a cyclic number.

It is not a de Polignac number, because 23216166661731 - 2¹⁷ = 23216166530659 is a prime.

It is a super-2 number, since 2×23216166661731² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23216166661781) 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, 37863211 + ... + 38471483.

It is an arithmetic number, because the mean of its divisors is an integer number (1937550379050).

Almost surely, 2^{23216166661731} is an apocalyptic number.

23216166661731 is a deficient number, since it is larger than the sum of its proper divisors (7784639403069).

23216166661731 is a wasteful number, since it uses less digits than its factorization.

23216166661731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627126.

The product of its digits is 1959552, while the sum is 51.

The spelling of 23216166661731 in words is "twenty-three trillion, two hundred sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, seven hundred thirty-one".