68624813544 has 32 divisors (see below), whose sum is σ = 196070896320. Its totient is φ = 19607089536.

The previous prime is 68624813533. The next prime is 68624813557. The reversal of 68624813544 is 44531842686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204240349 + ... + 204240684.

It is an arithmetic number, because the mean of its divisors is an integer number (6127215510).

Almost surely, 2^68624813544 is an apocalyptic number.

It is an amenable number.

68624813544 is an abundant number, since it is smaller than the sum of its proper divisors (127446082776).

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

68624813544 is a wasteful number, since it uses less digits than its factorization.

68624813544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408481049 (or 408481045 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 51.

The spelling of 68624813544 in words is "sixty-eight billion, six hundred twenty-four million, eight hundred thirteen thousand, five hundred forty-four".