77687870057 has 8 divisors (see below), whose sum is σ = 90461347776. Its totient is φ = 65333194992.

The previous prime is 77687870047. The next prime is 77687870123. The reversal of 77687870057 is 75007878677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77687870057 - 2¹⁴ = 77687853673 is a prime.

It is a super-3 number, since 3×77687870057³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77687870027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104700263 + ... + 104701004.

It is an arithmetic number, because the mean of its divisors is an integer number (11307668472).

Almost surely, 2^77687870057 is an apocalyptic number.

It is an amenable number.

77687870057 is a deficient number, since it is larger than the sum of its proper divisors (12773477719).

77687870057 is a wasteful number, since it uses less digits than its factorization.

77687870057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209401327.

The product of its (nonzero) digits is 32269440, while the sum is 62.

The spelling of 77687870057 in words is "seventy-seven billion, six hundred eighty-seven million, eight hundred seventy thousand, fifty-seven".