23551381194 has 48 divisors (see below), whose sum is σ = 53444294400. Its totient is φ = 6906556800.

The previous prime is 23551381187. The next prime is 23551381289. The reversal of 23551381194 is 49118315532.

It is a happy number.

It is a super-2 number, since 2×23551381194² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500719 + ... + 545730.

It is an arithmetic number, because the mean of its divisors is an integer number (1113422800).

Almost surely, 2^23551381194 is an apocalyptic number.

23551381194 is an abundant number, since it is smaller than the sum of its proper divisors (29892913206).

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

23551381194 is a wasteful number, since it uses less digits than its factorization.

23551381194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046507 (or 1046496 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The spelling of 23551381194 in words is "twenty-three billion, five hundred fifty-one million, three hundred eighty-one thousand, one hundred ninety-four".