77169900768 has 48 divisors (see below), whose sum is σ = 202589807616. Its totient is φ = 25720910720.

The previous prime is 77169900761. The next prime is 77169900791. The reversal of 77169900768 is 86700996177.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77169900761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221313 + ... + 1282943.

It is an arithmetic number, because the mean of its divisors is an integer number (4220620992).

Almost surely, 2^77169900768 is an apocalyptic number.

It is an amenable number.

77169900768 is an abundant number, since it is smaller than the sum of its proper divisors (125419906848).

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

77169900768 is a wasteful number, since it uses less digits than its factorization.

77169900768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74687 (or 74679 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 60.

The spelling of 77169900768 in words is "seventy-seven billion, one hundred sixty-nine million, nine hundred thousand, seven hundred sixty-eight".