77637430804 has 12 divisors (see below), whose sum is σ = 135867548404. Its totient is φ = 38818131264.

The previous prime is 77637430771. The next prime is 77637430859. The reversal of 77637430804 is 40803473677.

It can be written as a sum of positive squares in 2 ways, for example, as 70544422404 + 7093008400 = 265602^2 + 84220^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314104 + ... + 503920.

Almost surely, 2^77637430804 is an apocalyptic number.

It is an amenable number.

77637430804 is a deficient number, since it is larger than the sum of its proper divisors (58230117600).

77637430804 is a wasteful number, since it uses less digits than its factorization.

77637430804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292074 (or 292072 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 77637430804 in words is "seventy-seven billion, six hundred thirty-seven million, four hundred thirty thousand, eight hundred four".