75579456427 has 4 divisors (see below), whose sum is σ = 77187530016. Its totient is φ = 73971382840.

The previous prime is 75579456419. The next prime is 75579456431. The reversal of 75579456427 is 72465497557.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75579456427 - 2³ = 75579456419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75579456487) 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, 804036724 + ... + 804036817.

It is an arithmetic number, because the mean of its divisors is an integer number (19296882504).

Almost surely, 2^75579456427 is an apocalyptic number.

75579456427 is a deficient number, since it is larger than the sum of its proper divisors (1608073589).

75579456427 is a wasteful number, since it uses less digits than its factorization.

75579456427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608073588.

The product of its digits is 74088000, while the sum is 61.

The spelling of 75579456427 in words is "seventy-five billion, five hundred seventy-nine million, four hundred fifty-six thousand, four hundred twenty-seven".