88438113531 has 12 divisors (see below), whose sum is σ = 127749618360. Its totient is φ = 58956122400.

The previous prime is 88438113499. The next prime is 88438113551. The reversal of 88438113531 is 13531183488.

It is a happy number.

88438113531 is a `hidden beast` number, since 8 + 84 + 38 + 1 + 1 + 3 + 531 = 666.

It is not a de Polignac number, because 88438113531 - 2⁵ = 88438113499 is a prime.

It is a super-2 number, since 2×88438113531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (88438113551) 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 11 ways as a sum of consecutive naturals, for example, 7780 + ... + 420638.

It is an arithmetic number, because the mean of its divisors is an integer number (10645801530).

Almost surely, 2^88438113531 is an apocalyptic number.

88438113531 is a deficient number, since it is larger than the sum of its proper divisors (39311504829).

88438113531 is a wasteful number, since it uses less digits than its factorization.

88438113531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436666 (or 436663 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 88438113531 in words is "eighty-eight billion, four hundred thirty-eight million, one hundred thirteen thousand, five hundred thirty-one".