77576424640 has 112 divisors (see below), whose sum is σ = 217024244640. Its totient is φ = 26039623680.

The previous prime is 77576424637. The next prime is 77576424719. The reversal of 77576424640 is 4642467577.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801885 + ... + 893404.

It is an arithmetic number, because the mean of its divisors is an integer number (1937716470).

Almost surely, 2^77576424640 is an apocalyptic number.

It is an amenable number.

77576424640 is an abundant number, since it is smaller than the sum of its proper divisors (139447820000).

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

77576424640 is a wasteful number, since it uses less digits than its factorization.

77576424640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695330 (or 1695320 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 52.

The spelling of 77576424640 in words is "seventy-seven billion, five hundred seventy-six million, four hundred twenty-four thousand, six hundred forty".