23913943550 has 48 divisors (see below), whose sum is σ = 51118335360. Its totient is φ = 8153240160.

The previous prime is 23913943519. The next prime is 23913943561. The reversal of 23913943550 is 5534931932.

It is a super-2 number, since 2×23913943550² (a number of 22 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 128204 + ... + 253503.

It is an arithmetic number, because the mean of its divisors is an integer number (1064965320).

Almost surely, 2^23913943550 is an apocalyptic number.

23913943550 is an abundant number, since it is smaller than the sum of its proper divisors (27204391810).

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

23913943550 is a wasteful number, since it uses less digits than its factorization.

23913943550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381905 (or 381900 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 23913943550 in words is "twenty-three billion, nine hundred thirteen million, nine hundred forty-three thousand, five hundred fifty".