75459128979 has 32 divisors (see below), whose sum is σ = 109077933888. Its totient is φ = 46126080000.

The previous prime is 75459128911. The next prime is 75459128993. The reversal of 75459128979 is 97982195457.

It is not a de Polignac number, because 75459128979 - 2¹² = 75459124883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75459128279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3758989 + ... + 3779009.

It is an arithmetic number, because the mean of its divisors is an integer number (3408685434).

Almost surely, 2^75459128979 is an apocalyptic number.

75459128979 is a deficient number, since it is larger than the sum of its proper divisors (33618804909).

75459128979 is a wasteful number, since it uses less digits than its factorization.

75459128979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20679.

The product of its digits is 57153600, while the sum is 66.

The spelling of 75459128979 in words is "seventy-five billion, four hundred fifty-nine million, one hundred twenty-eight thousand, nine hundred seventy-nine".