23426564040 has 160 divisors (see below), whose sum is σ = 85897532160. Its totient is φ = 5679158400.

The previous prime is 23426564039. The next prime is 23426564047. The reversal of 23426564040 is 4046562432.

23426564040 is a `hidden beast` number, since 2 + 3 + 4 + 2 + 6 + 5 + 640 + 4 + 0 = 666.

It is a super-2 number, since 2×23426564040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23426563986 and 23426564004.

It is not an unprimeable number, because it can be changed into a prime (23426564047) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 293016 + ... + 364295.

It is an arithmetic number, because the mean of its divisors is an integer number (536859576).

Almost surely, 2^23426564040 is an apocalyptic number.

23426564040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23426564040 is an abundant number, since it is smaller than the sum of its proper divisors (62470968120).

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

23426564040 is a wasteful number, since it uses less digits than its factorization.

23426564040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657345 (or 657332 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 23426564040 in words is "twenty-three billion, four hundred twenty-six million, five hundred sixty-four thousand, forty".