57061560066 has 48 divisors (see below), whose sum is σ = 137037922560. Its totient is φ = 15777387360.

The previous prime is 57061560043. The next prime is 57061560067. The reversal of 57061560066 is 66006516075.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (57061560067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3121321 + ... + 3139548.

It is an arithmetic number, because the mean of its divisors is an integer number (2854956720).

Almost surely, 2^57061560066 is an apocalyptic number.

57061560066 is an abundant number, since it is smaller than the sum of its proper divisors (79976362494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57061560066 is a wasteful number, since it uses less digits than its factorization.

57061560066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260919 (or 6260912 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 57061560066 in words is "fifty-seven billion, sixty-one million, five hundred sixty thousand, sixty-six".