23216640266664 has 64 divisors (see below), whose sum is σ = 69451487985600. Its totient is φ = 7143581619648.

The previous prime is 23216640266623. The next prime is 23216640266669. The reversal of 23216640266664 is 46666204661232.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 23216640266664.

It is not an unprimeable number, because it can be changed into a prime (23216640266669) 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, 4134014334 + ... + 4134019949.

It is an arithmetic number, because the mean of its divisors is an integer number (1085179499775).

Almost surely, 2^{23216640266664} is an apocalyptic number.

23216640266664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23216640266664 is an abundant number, since it is smaller than the sum of its proper divisors (46234847718936).

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

23216640266664 is a wasteful number, since it uses less digits than its factorization.

23216640266664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268034311 (or 8268034301 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 23216640266664 in words is "twenty-three trillion, two hundred sixteen billion, six hundred forty million, two hundred sixty-six thousand, six hundred sixty-four".