79778104636 has 6 divisors (see below), whose sum is σ = 139611683120. Its totient is φ = 39889052316.

The previous prime is 79778104613. The next prime is 79778104673. The reversal of 79778104636 is 63640187797.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9972263076 + ... + 9972263083.

Almost surely, 2^79778104636 is an apocalyptic number.

It is an amenable number.

79778104636 is a deficient number, since it is larger than the sum of its proper divisors (59833578484).

79778104636 is a wasteful number, since it uses less digits than its factorization.

79778104636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19944526163 (or 19944526161 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 79778104636 in words is "seventy-nine billion, seven hundred seventy-eight million, one hundred four thousand, six hundred thirty-six".