77297417760 has 48 divisors (see below), whose sum is σ = 243486867456. Its totient is φ = 20612644608.

The previous prime is 77297417741. The next prime is 77297417767. The reversal of 77297417760 is 6771479277.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77297417760.

It is not an unprimeable number, because it can be changed into a prime (77297417767) 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, 80517664 + ... + 80518623.

It is an arithmetic number, because the mean of its divisors is an integer number (5072643072).

Almost surely, 2^77297417760 is an apocalyptic number.

It is an amenable number.

77297417760 is an abundant number, since it is smaller than the sum of its proper divisors (166189449696).

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

77297417760 is a wasteful number, since it uses less digits than its factorization.

77297417760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161036305 (or 161036297 counting only the distinct ones).

The product of its (nonzero) digits is 7260624, while the sum is 57.

The spelling of 77297417760 in words is "seventy-seven billion, two hundred ninety-seven million, four hundred seventeen thousand, seven hundred sixty".