77802478683404 has 24 divisors (see below), whose sum is σ = 140564449807488. Its totient is φ = 37641529393920.

The previous prime is 77802478683367. The next prime is 77802478683409. The reversal of 77802478683404 is 40438687420877.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77802478683409) 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, 39290267 + ... + 41222930.

It is an arithmetic number, because the mean of its divisors is an integer number (5856852075312).

Almost surely, 2^{77802478683404} is an apocalyptic number.

It is an amenable number.

77802478683404 is a deficient number, since it is larger than the sum of its proper divisors (62761971124084).

77802478683404 is a wasteful number, since it uses less digits than its factorization.

77802478683404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80521025 (or 80521023 counting only the distinct ones).

The product of its (nonzero) digits is 404619264, while the sum is 68.

The spelling of 77802478683404 in words is "seventy-seven trillion, eight hundred two billion, four hundred seventy-eight million, six hundred eighty-three thousand, four hundred four".