76538886639218 has 32 divisors (see below), whose sum is σ = 120745518649344. Its totient is φ = 36316655508672.

The previous prime is 76538886639211. The next prime is 76538886639221. The reversal of 76538886639218 is 81293668883567.

It is a Smith number, since the sum of its digits (80) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (76538886639211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488061596 + ... + 488218392.

It is an arithmetic number, because the mean of its divisors is an integer number (3773297457792).

Almost surely, 2^{76538886639218} is an apocalyptic number.

76538886639218 is a deficient number, since it is larger than the sum of its proper divisors (44206632010126).

76538886639218 is a wasteful number, since it uses less digits than its factorization.

76538886639218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240506.

The product of its digits is 5016453120, while the sum is 80.

The spelling of 76538886639218 in words is "seventy-six trillion, five hundred thirty-eight billion, eight hundred eighty-six million, six hundred thirty-nine thousand, two hundred eighteen".