23250615381 has 128 divisors (see below), whose sum is σ = 42971955200. Its totient is φ = 12124728000.

The previous prime is 23250615371. The next prime is 23250615431. The reversal of 23250615381 is 18351605232.

23250615381 is a `hidden beast` number, since 2 + 3 + 2 + 5 + 0 + 615 + 38 + 1 = 666.

It is not a de Polignac number, because 23250615381 - 2⁷ = 23250615253 is a prime.

It is a super-2 number, since 2×23250615381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23250615371) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 36846936 + ... + 36847566.

It is an arithmetic number, because the mean of its divisors is an integer number (335718400).

Almost surely, 2^23250615381 is an apocalyptic number.

23250615381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23250615381 is a deficient number, since it is larger than the sum of its proper divisors (19721339819).

23250615381 is a wasteful number, since it uses less digits than its factorization.

23250615381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 23250615381 in words is "twenty-three billion, two hundred fifty million, six hundred fifteen thousand, three hundred eighty-one".