77910579460 has 24 divisors (see below), whose sum is σ = 186985391040. Its totient is φ = 26712198624.

The previous prime is 77910579443. The next prime is 77910579511. The reversal of 77910579460 is 6497501977.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278251930 + ... + 278252209.

It is an arithmetic number, because the mean of its divisors is an integer number (7791057960).

Almost surely, 2^77910579460 is an apocalyptic number.

77910579460 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77910579460 is an abundant number, since it is smaller than the sum of its proper divisors (109074811580).

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

77910579460 is a wasteful number, since it uses less digits than its factorization.

77910579460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556504155 (or 556504153 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 77910579460 in words is "seventy-seven billion, nine hundred ten million, five hundred seventy-nine thousand, four hundred sixty".