75165207138 has 24 divisors (see below), whose sum is σ = 186123370368. Its totient is φ = 21475773432.

The previous prime is 75165207137. The next prime is 75165207149. The reversal of 75165207138 is 83170256157.

It is a happy number.

75165207138 is a `hidden beast` number, since 7 + 51 + 6 + 520 + 71 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 75165207093 and 75165207102.

It is not an unprimeable number, because it can be changed into a prime (75165207137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298274506 + ... + 298274757.

It is an arithmetic number, because the mean of its divisors is an integer number (7755140432).

Almost surely, 2^75165207138 is an apocalyptic number.

75165207138 is an abundant number, since it is smaller than the sum of its proper divisors (110958163230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75165207138 is a wasteful number, since it uses less digits than its factorization.

75165207138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596549278 (or 596549275 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 75165207138 in words is "seventy-five billion, one hundred sixty-five million, two hundred seven thousand, one hundred thirty-eight".