75736725861 has 4 divisors (see below), whose sum is σ = 100982301152. Its totient is φ = 50491150572.

The previous prime is 75736725847. The next prime is 75736725863. The reversal of 75736725861 is 16852763757.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 75736725861 - 2²³ = 75728337253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75736725863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12622787641 + ... + 12622787646.

It is an arithmetic number, because the mean of its divisors is an integer number (25245575288).

Almost surely, 2^75736725861 is an apocalyptic number.

It is an amenable number.

75736725861 is a deficient number, since it is larger than the sum of its proper divisors (25245575291).

75736725861 is a wasteful number, since it uses less digits than its factorization.

75736725861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25245575290.

The product of its digits is 14817600, while the sum is 57.

The spelling of 75736725861 in words is "seventy-five billion, seven hundred thirty-six million, seven hundred twenty-five thousand, eight hundred sixty-one".