57444953513 has 4 divisors (see below), whose sum is σ = 57463959168. Its totient is φ = 57425947860.

The previous prime is 57444953471. The next prime is 57444953557. The reversal of 57444953513 is 31535944475.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57444953513 - 2²⁰ = 57443904937 is a prime.

It is a super-2 number, since 2×57444953513² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57444953413) 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, 9498293 + ... + 9504338.

It is an arithmetic number, because the mean of its divisors is an integer number (14365989792).

Almost surely, 2^57444953513 is an apocalyptic number.

It is an amenable number.

57444953513 is a deficient number, since it is larger than the sum of its proper divisors (19005655).

57444953513 is a wasteful number, since it uses less digits than its factorization.

57444953513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19005654.

The product of its digits is 4536000, while the sum is 50.

The spelling of 57444953513 in words is "fifty-seven billion, four hundred forty-four million, nine hundred fifty-three thousand, five hundred thirteen".