75388397679 has 40 divisors (see below), whose sum is σ = 129979822368. Its totient is φ = 42652526400.

The previous prime is 75388397663. The next prime is 75388397681. The reversal of 75388397679 is 97679388357.

75388397679 is a `hidden beast` number, since 7 + 538 + 83 + 9 + 7 + 6 + 7 + 9 = 666.

It is not a de Polignac number, because 75388397679 - 2⁴ = 75388397663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75388397639) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 600952 + ... + 715485.

Almost surely, 2^75388397679 is an apocalyptic number.

75388397679 is a deficient number, since it is larger than the sum of its proper divisors (54591424689).

75388397679 is a wasteful number, since it uses less digits than its factorization.

75388397679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316557 (or 1316548 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 72.

The spelling of 75388397679 in words is "seventy-five billion, three hundred eighty-eight million, three hundred ninety-seven thousand, six hundred seventy-nine".