808392136538 has 32 divisors (see below), whose sum is σ = 1399254624768. Its totient is φ = 343109779200.

The previous prime is 808392136499. The next prime is 808392136589. The reversal of 808392136538 is 835631293808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51170 + ... + 1272557.

It is an arithmetic number, because the mean of its divisors is an integer number (43726707024).

Almost surely, 2^808392136538 is an apocalyptic number.

808392136538 is a deficient number, since it is larger than the sum of its proper divisors (590862488230).

808392136538 is a wasteful number, since it uses less digits than its factorization.

808392136538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324158.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 808392136538 in words is "eight hundred eight billion, three hundred ninety-two million, one hundred thirty-six thousand, five hundred thirty-eight".