75372296421 has 4 divisors (see below), whose sum is σ = 100496395232. Its totient is φ = 50248197612.

The previous prime is 75372296357. The next prime is 75372296479. The reversal of 75372296421 is 12469227357.

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 75372296421 - 2⁶ = 75372296357 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 (75372296621) 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, 12562049401 + ... + 12562049406.

It is an arithmetic number, because the mean of its divisors is an integer number (25124098808).

Almost surely, 2^75372296421 is an apocalyptic number.

It is an amenable number.

75372296421 is a deficient number, since it is larger than the sum of its proper divisors (25124098811).

75372296421 is a wasteful number, since it uses less digits than its factorization.

75372296421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25124098810.

The product of its digits is 1270080, while the sum is 48.

The spelling of 75372296421 in words is "seventy-five billion, three hundred seventy-two million, two hundred ninety-six thousand, four hundred twenty-one".