76406138538 has 16 divisors (see below), whose sum is σ = 154653389856. Its totient is φ = 25161860720.

The previous prime is 76406138537. The next prime is 76406138551. The reversal of 76406138538 is 83583160467.

It is not an unprimeable number, because it can be changed into a prime (76406138533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76712493 + ... + 76713488.

It is an arithmetic number, because the mean of its divisors is an integer number (9665836866).

Almost surely, 2^76406138538 is an apocalyptic number.

76406138538 is an abundant number, since it is smaller than the sum of its proper divisors (78247251318).

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

76406138538 is a wasteful number, since it uses less digits than its factorization.

76406138538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153426069.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 76406138538 in words is "seventy-six billion, four hundred six million, one hundred thirty-eight thousand, five hundred thirty-eight".