75212155139 has 24 divisors (see below), whose sum is σ = 90023178000. Its totient is φ = 62542307520.

The previous prime is 75212155129. The next prime is 75212155181. The reversal of 75212155139 is 93155121257.

It is not a de Polignac number, because 75212155139 - 2²⁴ = 75195377923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75212155096 and 75212155105.

It is not an unprimeable number, because it can be changed into a prime (75212155129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497384 + ... + 630725.

It is an arithmetic number, because the mean of its divisors is an integer number (3750965750).

Almost surely, 2^75212155139 is an apocalyptic number.

75212155139 is a deficient number, since it is larger than the sum of its proper divisors (14811022861).

75212155139 is a wasteful number, since it uses less digits than its factorization.

75212155139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128179 (or 1128168 counting only the distinct ones).

The product of its digits is 94500, while the sum is 41.

The spelling of 75212155139 in words is "seventy-five billion, two hundred twelve million, one hundred fifty-five thousand, one hundred thirty-nine".