23166550572 has 48 divisors (see below), whose sum is σ = 59130204672. Its totient is φ = 7001023680.

The previous prime is 23166550523. The next prime is 23166550591. The reversal of 23166550572 is 27505566132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190663 + ... + 287550.

It is an arithmetic number, because the mean of its divisors is an integer number (1231879264).

Almost surely, 2^23166550572 is an apocalyptic number.

23166550572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23166550572 is an abundant number, since it is smaller than the sum of its proper divisors (35963654100).

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

23166550572 is a wasteful number, since it uses less digits than its factorization.

23166550572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478598 (or 478596 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 23166550572 in words is "twenty-three billion, one hundred sixty-six million, five hundred fifty thousand, five hundred seventy-two".