77895252660 has 96 divisors (see below), whose sum is σ = 232352386560. Its totient is φ = 19441683072.

The previous prime is 77895252653. The next prime is 77895252661. The reversal of 77895252660 is 6625259877.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 77895252660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77895252661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317002 + ... + 506241.

It is an arithmetic number, because the mean of its divisors is an integer number (2420337360).

Almost surely, 2^77895252660 is an apocalyptic number.

It is an amenable number.

77895252660 is an abundant number, since it is smaller than the sum of its proper divisors (154457133900).

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

77895252660 is a wasteful number, since it uses less digits than its factorization.

77895252660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823357 (or 823355 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 77895252660 in words is "seventy-seven billion, eight hundred ninety-five million, two hundred fifty-two thousand, six hundred sixty".