77694875188 has 24 divisors (see below), whose sum is σ = 156343070912. Its totient is φ = 33093520704.

The previous prime is 77694875179. The next prime is 77694875189. The reversal of 77694875188 is 88157849677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77694875189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8507145 + ... + 8516272.

Almost surely, 2^77694875188 is an apocalyptic number.

It is an amenable number.

77694875188 is an abundant number, since it is smaller than the sum of its proper divisors (78648195724).

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

77694875188 is a wasteful number, since it uses less digits than its factorization.

77694875188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023591 (or 17023589 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 70.

The spelling of 77694875188 in words is "seventy-seven billion, six hundred ninety-four million, eight hundred seventy-five thousand, one hundred eighty-eight".