75720157188 has 24 divisors (see below), whose sum is σ = 190271164608. Its totient is φ = 23298509856.

The previous prime is 75720157157. The next prime is 75720157213. The reversal of 75720157188 is 88175102757.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 75720157188.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242692656 + ... + 242692967.

It is an arithmetic number, because the mean of its divisors is an integer number (7927965192).

Almost surely, 2^75720157188 is an apocalyptic number.

75720157188 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

75720157188 is an abundant number, since it is smaller than the sum of its proper divisors (114551007420).

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

75720157188 is a wasteful number, since it uses less digits than its factorization.

75720157188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485385643 (or 485385641 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 51.

The spelling of 75720157188 in words is "seventy-five billion, seven hundred twenty million, one hundred fifty-seven thousand, one hundred eighty-eight".