57247726434440 has 16 divisors (see below), whose sum is σ = 128807384477580. Its totient is φ = 22899090573760.

The previous prime is 57247726434439. The next prime is 57247726434463. The reversal of 57247726434440 is 4443462774275.

It can be written as a sum of positive squares in 2 ways, for example, as 52051232339716 + 5196494094724 = 7214654^2 + 2279582^2 .

It is a super-2 number, since 2×57247726434440² (a number of 28 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 57247726434440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715596580391 + ... + 715596580470.

Almost surely, 2^{57247726434440} is an apocalyptic number.

It is an amenable number.

57247726434440 is an abundant number, since it is smaller than the sum of its proper divisors (71559658043140).

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

57247726434440 is a wasteful number, since it uses less digits than its factorization.

57247726434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431193160872 (or 1431193160868 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 59.

The spelling of 57247726434440 in words is "fifty-seven trillion, two hundred forty-seven billion, seven hundred twenty-six million, four hundred thirty-four thousand, four hundred forty".