77157110440 has 32 divisors (see below), whose sum is σ = 173612992680. Its totient is φ = 30861156352.

The previous prime is 77157110411. The next prime is 77157110447. The reversal of 77157110440 is 4401175177.

It can be written as a sum of positive squares in 4 ways, for example, as 46466975844 + 30690134596 = 215562^2 + 175186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77157110440.

It is not an unprimeable number, because it can be changed into a prime (77157110447) 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, 900504 + ... + 982456.

Almost surely, 2^77157110440 is an apocalyptic number.

It is an amenable number.

77157110440 is an abundant number, since it is smaller than the sum of its proper divisors (96455882240).

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

77157110440 is a wasteful number, since it uses less digits than its factorization.

77157110440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105501 (or 105497 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 37.

The spelling of 77157110440 in words is "seventy-seven billion, one hundred fifty-seven million, one hundred ten thousand, four hundred forty".