77330557857 has 8 divisors (see below), whose sum is σ = 117837040576. Its totient is φ = 44188890192.

The previous prime is 77330557819. The next prime is 77330557861. The reversal of 77330557857 is 75875503377.

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

It is not a de Polignac number, because 77330557857 - 2⁶ = 77330557793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77330557797 and 77330557806.

It is not an unprimeable number, because it can be changed into a prime (77330557807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841203738 + ... + 1841203779.

It is an arithmetic number, because the mean of its divisors is an integer number (14729630072).

Almost surely, 2^77330557857 is an apocalyptic number.

It is an amenable number.

77330557857 is a deficient number, since it is larger than the sum of its proper divisors (40506482719).

77330557857 is a wasteful number, since it uses less digits than its factorization.

77330557857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682407527.

The product of its (nonzero) digits is 21609000, while the sum is 57.

The spelling of 77330557857 in words is "seventy-seven billion, three hundred thirty million, five hundred fifty-seven thousand, eight hundred fifty-seven".