231745164624 has 60 divisors (see below), whose sum is σ = 648604872916. Its totient is φ = 77243590656.

The previous prime is 231745164587. The next prime is 231745164647. The reversal of 231745164624 is 426461547132.

231745164624 is a `hidden beast` number, since 2 + 3 + 1 + 7 + 4 + 5 + 16 + 4 + 624 = 666.

231745164624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 224516764224 + 7228400400 = 473832^2 + 85020^2 .

It is a super-2 number, since 2×231745164624² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231745164624.

It is a congruent number.

It is an unprimeable number.

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, 2865024 + ... + 2944800.

Almost surely, 2^231745164624 is an apocalyptic number.

231745164624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231745164624 is an abundant number, since it is smaller than the sum of its proper divisors (416859708292).

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

231745164624 is a wasteful number, since it uses less digits than its factorization.

231745164624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99964 (or 99955 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 231745164624 in words is "two hundred thirty-one billion, seven hundred forty-five million, one hundred sixty-four thousand, six hundred twenty-four".