57591265649 has 4 divisors (see below), whose sum is σ = 58535384820. Its totient is φ = 56647146480.

The previous prime is 57591265621. The next prime is 57591265663. The reversal of 57591265649 is 94656219575.

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 22622265649 + 34969000000 = 150407^2 + 187000^2 .

It is a cyclic number.

It is not a de Polignac number, because 57591265649 - 2¹⁶ = 57591200113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57591262649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472059494 + ... + 472059615.

It is an arithmetic number, because the mean of its divisors is an integer number (14633846205).

Almost surely, 2^57591265649 is an apocalyptic number.

It is an amenable number.

57591265649 is a deficient number, since it is larger than the sum of its proper divisors (944119171).

57591265649 is an equidigital number, since it uses as much as digits as its factorization.

57591265649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944119170.

The product of its digits is 20412000, while the sum is 59.

The spelling of 57591265649 in words is "fifty-seven billion, five hundred ninety-one million, two hundred sixty-five thousand, six hundred forty-nine".