68624600080 has 40 divisors (see below), whose sum is σ = 165054000600. Its totient is φ = 26503292928.

The previous prime is 68624600069. The next prime is 68624600089. The reversal of 68624600080 is 8000642686.

It can be written as a sum of positive squares in 4 ways, for example, as 41370624 + 68583229456 = 6432^2 + 261884^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×68624600080² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (68624600089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14787465 + ... + 14792104.

It is an arithmetic number, because the mean of its divisors is an integer number (4126350015).

Almost surely, 2^68624600080 is an apocalyptic number.

It is an amenable number.

68624600080 is an abundant number, since it is smaller than the sum of its proper divisors (96429400520).

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

68624600080 is a wasteful number, since it uses less digits than its factorization.

68624600080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29579611 (or 29579605 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 68624600080 in words is "sixty-eight billion, six hundred twenty-four million, six hundred thousand, eighty".