76449981138 has 16 divisors (see below), whose sum is σ = 161894077920. Its totient is φ = 23984307776.

The previous prime is 76449981137. The next prime is 76449981149. The reversal of 76449981138 is 83118994467.

It is not an unprimeable number, because it can be changed into a prime (76449981137) 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, 374754708 + ... + 374754911.

It is an arithmetic number, because the mean of its divisors is an integer number (10118379870).

Almost surely, 2^76449981138 is an apocalyptic number.

76449981138 is an abundant number, since it is smaller than the sum of its proper divisors (85444096782).

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

76449981138 is a wasteful number, since it uses less digits than its factorization.

76449981138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749509641.

The product of its digits is 10450944, while the sum is 60.

The spelling of 76449981138 in words is "seventy-six billion, four hundred forty-nine million, nine hundred eighty-one thousand, one hundred thirty-eight".