77087433888 has 48 divisors (see below), whose sum is σ = 224838351360. Its totient is φ = 25695811008.

The previous prime is 77087433877. The next prime is 77087433889. The reversal of 77087433888 is 88833478077.

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

It is not an unprimeable number, because it can be changed into a prime (77087433889) 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, 44609920 + ... + 44611647.

It is an arithmetic number, because the mean of its divisors is an integer number (4684132320).

Almost surely, 2^77087433888 is an apocalyptic number.

It is an amenable number.

77087433888 is an abundant number, since it is smaller than the sum of its proper divisors (147750917472).

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

77087433888 is a wasteful number, since it uses less digits than its factorization.

77087433888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89221586 (or 89221572 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 63.

The spelling of 77087433888 in words is "seventy-seven billion, eighty-seven million, four hundred thirty-three thousand, eight hundred eighty-eight".