23355552040 has 16 divisors (see below), whose sum is σ = 52549992180. Its totient is φ = 9342220800.

The previous prime is 23355551981. The next prime is 23355552047. The reversal of 23355552040 is 4025555332.

It can be written as a sum of positive squares in 2 ways, for example, as 22909244164 + 446307876 = 151358^2 + 21126^2 .

It is a super-2 number, since 2×23355552040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23355551987 and 23355552005.

It is not an unprimeable number, because it can be changed into a prime (23355552047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291944361 + ... + 291944440.

Almost surely, 2^23355552040 is an apocalyptic number.

23355552040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23355552040 is an abundant number, since it is smaller than the sum of its proper divisors (29194440140).

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

23355552040 is a wasteful number, since it uses less digits than its factorization.

23355552040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583888812 (or 583888808 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 34.

The spelling of 23355552040 in words is "twenty-three billion, three hundred fifty-five million, five hundred fifty-two thousand, forty".