23955366640 has 40 divisors (see below), whose sum is σ = 58117807008. Its totient is φ = 9165530880.

The previous prime is 23955366637. The next prime is 23955366713. The reversal of 23955366640 is 4666355932.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6507771 + ... + 6511450.

Almost surely, 2^23955366640 is an apocalyptic number.

23955366640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23955366640 is an abundant number, since it is smaller than the sum of its proper divisors (34162440368).

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

23955366640 is a wasteful number, since it uses less digits than its factorization.

23955366640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019257 (or 13019251 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 49.

The spelling of 23955366640 in words is "twenty-three billion, nine hundred fifty-five million, three hundred sixty-six thousand, six hundred forty".