77318157204 has 48 divisors (see below), whose sum is σ = 201404562240. Its totient is φ = 25650565920.

The previous prime is 77318157199. The next prime is 77318157221. The reversal of 77318157204 is 40275181377.

77318157204 is a `hidden beast` number, since 7 + 73 + 1 + 8 + 1 + 572 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 77318157204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1673679 + ... + 1719254.

It is an arithmetic number, because the mean of its divisors is an integer number (4195928380).

Almost surely, 2^77318157204 is an apocalyptic number.

It is an amenable number.

77318157204 is an abundant number, since it is smaller than the sum of its proper divisors (124086405036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77318157204 is a wasteful number, since it uses less digits than its factorization.

77318157204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393157 (or 3393149 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 77318157204 in words is "seventy-seven billion, three hundred eighteen million, one hundred fifty-seven thousand, two hundred four".