57391787657 has 8 divisors (see below), whose sum is σ = 60715992000. Its totient is φ = 54097941744.

The previous prime is 57391787641. The next prime is 57391787711. The reversal of 57391787657 is 75678719375.

57391787657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57391787657 - 2⁴ = 57391787641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57391787593 and 57391787602.

It is not an unprimeable number, because it can be changed into a prime (57391717657) 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, 7585718 + ... + 7593279.

It is an arithmetic number, because the mean of its divisors is an integer number (7589499000).

Almost surely, 2^57391787657 is an apocalyptic number.

It is an amenable number.

57391787657 is a deficient number, since it is larger than the sum of its proper divisors (3324204343).

57391787657 is a wasteful number, since it uses less digits than its factorization.

57391787657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15179215.

The product of its digits is 77792400, while the sum is 65.

The spelling of 57391787657 in words is "fifty-seven billion, three hundred ninety-one million, seven hundred eighty-seven thousand, six hundred fifty-seven".