75227078939 has 4 divisors (see below), whose sum is σ = 75288290160. Its totient is φ = 75165867720.

The previous prime is 75227078911. The next prime is 75227078957. The reversal of 75227078939 is 93987072257.

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 75227078939 - 2¹² = 75227074843 is a prime.

It is a super-2 number, since 2×75227078939² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75227078999) 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, 30603767 + ... + 30606224.

It is an arithmetic number, because the mean of its divisors is an integer number (18822072540).

Almost surely, 2^75227078939 is an apocalyptic number.

75227078939 is a deficient number, since it is larger than the sum of its proper divisors (61211221).

75227078939 is a wasteful number, since it uses less digits than its factorization.

75227078939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61211220.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 75227078939 in words is "seventy-five billion, two hundred twenty-seven million, seventy-eight thousand, nine hundred thirty-nine".