77689185152 has 16 divisors (see below), whose sum is σ = 154771423800. Its totient is φ = 38844592512.

The previous prime is 77689185137. The next prime is 77689185163. The reversal of 77689185152 is 25158198677.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 77689185091 and 77689185100.

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, 303473252 + ... + 303473507.

Almost surely, 2^77689185152 is an apocalyptic number.

It is an amenable number.

77689185152 is a deficient number, since it is larger than the sum of its proper divisors (77082238648).

77689185152 is an equidigital number, since it uses as much as digits as its factorization.

77689185152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606946773 (or 606946761 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 59.

The spelling of 77689185152 in words is "seventy-seven billion, six hundred eighty-nine million, one hundred eighty-five thousand, one hundred fifty-two".