57561722648 has 32 divisors (see below), whose sum is σ = 109490758560. Its totient is φ = 28364501760.

The previous prime is 57561722633. The next prime is 57561722651. The reversal of 57561722648 is 84622716575.

It is a super-2 number, since 2×57561722648² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57561722648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559090 + ... + 1595582.

It is an arithmetic number, because the mean of its divisors is an integer number (3421586205).

Almost surely, 2^57561722648 is an apocalyptic number.

It is an amenable number.

57561722648 is a deficient number, since it is larger than the sum of its proper divisors (51929035912).

57561722648 is a wasteful number, since it uses less digits than its factorization.

57561722648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39347 (or 39343 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

The spelling of 57561722648 in words is "fifty-seven billion, five hundred sixty-one million, seven hundred twenty-two thousand, six hundred forty-eight".