57072012637 has 4 divisors (see below), whose sum is σ = 57072814876. Its totient is φ = 57071210400.

The previous prime is 57072012623. The next prime is 57072012643. The reversal of 57072012637 is 73621027075.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14069280996 + 43002731641 = 118614^2 + 207371^2 .

It is a cyclic number.

It is not a de Polignac number, because 57072012637 - 2¹⁹ = 57071488349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57072012637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072012037) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 282768 + ... + 440569.

It is an arithmetic number, because the mean of its divisors is an integer number (14268203719).

Almost surely, 2^57072012637 is an apocalyptic number.

It is an amenable number.

57072012637 is a deficient number, since it is larger than the sum of its proper divisors (802239).

57072012637 is an equidigital number, since it uses as much as digits as its factorization.

57072012637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802238.

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 57072012637 in words is "fifty-seven billion, seventy-two million, twelve thousand, six hundred thirty-seven".