75087616979 has 6 divisors (see below), whose sum is σ = 79247596140. Its totient is φ = 71135636796.

The previous prime is 75087616973. The next prime is 75087616987. The reversal of 75087616979 is 97961678057.

It is not a de Polignac number, because 75087616979 - 2⁴ = 75087616963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75087616973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103999109 + ... + 103999830.

It is an arithmetic number, because the mean of its divisors is an integer number (13207932690).

Almost surely, 2^75087616979 is an apocalyptic number.

75087616979 is a deficient number, since it is larger than the sum of its proper divisors (4159979161).

75087616979 is a wasteful number, since it uses less digits than its factorization.

75087616979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207998977 (or 207998958 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 75087616979 in words is "seventy-five billion, eighty-seven million, six hundred sixteen thousand, nine hundred seventy-nine".