57377543661 has 48 divisors (see below), whose sum is σ = 87620682240. Its totient is φ = 36081067680.

The previous prime is 57377543633. The next prime is 57377543669. The reversal of 57377543661 is 16634577375.

57377543661 is a `hidden beast` number, since 5 + 7 + 37 + 7 + 543 + 6 + 61 = 666.

It is not a de Polignac number, because 57377543661 - 2²¹ = 57375446509 is a prime.

It is a super-2 number, since 2×57377543661² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57377543598 and 57377543607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57377543669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69379930 + ... + 69380756.

It is an arithmetic number, because the mean of its divisors is an integer number (1825430880).

Almost surely, 2^57377543661 is an apocalyptic number.

It is an amenable number.

57377543661 is a deficient number, since it is larger than the sum of its proper divisors (30243138579).

57377543661 is a wasteful number, since it uses less digits than its factorization.

57377543661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2123 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 54.

The spelling of 57377543661 in words is "fifty-seven billion, three hundred seventy-seven million, five hundred forty-three thousand, six hundred sixty-one".