23211655040 has 64 divisors (see below), whose sum is σ = 63417569760. Its totient is φ = 7958280192.

The previous prime is 23211655037. The next prime is 23211655081. The reversal of 23211655040 is 4055611232.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 23211654994 and 23211655012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2586107 + ... + 2595066.

Almost surely, 2^23211655040 is an apocalyptic number.

23211655040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23211655040 is an abundant number, since it is smaller than the sum of its proper divisors (40205914720).

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

23211655040 is an equidigital number, since it uses as much as digits as its factorization.

23211655040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181199 (or 5181187 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 23211655040 in words is "twenty-three billion, two hundred eleven million, six hundred fifty-five thousand, forty".