244645764057 has 6 divisors (see below), whose sum is σ = 353377214762. Its totient is φ = 163097176032.

The previous prime is 244645764053. The next prime is 244645764067. The reversal of 244645764057 is 750467546442.

244645764057 is a `hidden beast` number, since 2 + 4 + 4 + 64 + 576 + 4 + 0 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 152458230681 + 92187533376 = 390459^2 + 303624^2 .

It is not a de Polignac number, because 244645764057 - 2² = 244645764053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244645763994 and 244645764012.

It is not an unprimeable number, because it can be changed into a prime (244645764053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13591431328 + ... + 13591431345.

Almost surely, 2^244645764057 is an apocalyptic number.

It is an amenable number.

244645764057 is a deficient number, since it is larger than the sum of its proper divisors (108731450705).

244645764057 is a wasteful number, since it uses less digits than its factorization.

244645764057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27182862679 (or 27182862676 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 54.

The spelling of 244645764057 in words is "two hundred forty-four billion, six hundred forty-five million, seven hundred sixty-four thousand, fifty-seven".