90231725913 has 32 divisors (see below), whose sum is σ = 139115796480. Its totient is φ = 50954175360.

The previous prime is 90231725879. The next prime is 90231725929. The reversal of 90231725913 is 31952713209.

It is not a de Polignac number, because 90231725913 - 2⁶ = 90231725849 is a prime.

It is a super-2 number, since 2×90231725913² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90231725953) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3746556 + ... + 3770562.

It is an arithmetic number, because the mean of its divisors is an integer number (4347368640).

Almost surely, 2^90231725913 is an apocalyptic number.

It is an amenable number.

90231725913 is a deficient number, since it is larger than the sum of its proper divisors (48884070567).

90231725913 is a wasteful number, since it uses less digits than its factorization.

90231725913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26117.

The product of its (nonzero) digits is 102060, while the sum is 42.

The spelling of 90231725913 in words is "ninety billion, two hundred thirty-one million, seven hundred twenty-five thousand, nine hundred thirteen".