72587533668 has 24 divisors (see below), whose sum is σ = 182399443968. Its totient is φ = 22334625696.

The previous prime is 72587533649. The next prime is 72587533693. The reversal of 72587533668 is 86633578527.

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 7 ways as a sum of consecutive naturals, for example, 232652196 + ... + 232652507.

It is an arithmetic number, because the mean of its divisors is an integer number (7599976832).

Almost surely, 2^72587533668 is an apocalyptic number.

72587533668 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

72587533668 is an abundant number, since it is smaller than the sum of its proper divisors (109811910300).

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

72587533668 is a wasteful number, since it uses less digits than its factorization.

72587533668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465304723 (or 465304721 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 60.

The spelling of 72587533668 in words is "seventy-two billion, five hundred eighty-seven million, five hundred thirty-three thousand, six hundred sixty-eight".