57065051661 has 16 divisors (see below), whose sum is σ = 76654942848. Its totient is φ = 37760184000.

The previous prime is 57065051653. The next prime is 57065051671. The reversal of 57065051661 is 16615056075.

57065051661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57065051661 - 2³ = 57065051653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57065051621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134136 + ... + 363486.

It is an arithmetic number, because the mean of its divisors is an integer number (4790933928).

Almost surely, 2^57065051661 is an apocalyptic number.

It is an amenable number.

57065051661 is a deficient number, since it is larger than the sum of its proper divisors (19589891187).

57065051661 is a wasteful number, since it uses less digits than its factorization.

57065051661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229972.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 57065051661 in words is "fifty-seven billion, sixty-five million, fifty-one thousand, six hundred sixty-one".