77857752605799 has 16 divisors (see below), whose sum is σ = 108381479616000. Its totient is φ = 49621999079136.

The previous prime is 77857752605771. The next prime is 77857752605807. The reversal of 77857752605799 is 99750625775877.

It is not a de Polignac number, because 77857752605799 - 2¹³ = 77857752597607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77857752605599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300129324 + ... + 300388625.

It is an arithmetic number, because the mean of its divisors is an integer number (6773842476000).

Almost surely, 2^{77857752605799} is an apocalyptic number.

77857752605799 is a deficient number, since it is larger than the sum of its proper divisors (30523727010201).

77857752605799 is a wasteful number, since it uses less digits than its factorization.

77857752605799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600519854.

The product of its (nonzero) digits is 16336404000, while the sum is 84.

The spelling of 77857752605799 in words is "seventy-seven trillion, eight hundred fifty-seven billion, seven hundred fifty-two million, six hundred five thousand, seven hundred ninety-nine".