57448157479 has 4 divisors (see below), whose sum is σ = 57474966976. Its totient is φ = 57421347984.

The previous prime is 57448157461. The next prime is 57448157513. The reversal of 57448157479 is 97475184475.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57448157479 - 2²³ = 57439768871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57443157479) 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, 13401534 + ... + 13405819.

It is an arithmetic number, because the mean of its divisors is an integer number (14368741744).

Almost surely, 2^57448157479 is an apocalyptic number.

57448157479 is a deficient number, since it is larger than the sum of its proper divisors (26809497).

57448157479 is a wasteful number, since it uses less digits than its factorization.

57448157479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809496.

The product of its digits is 39513600, while the sum is 61.

The spelling of 57448157479 in words is "fifty-seven billion, four hundred forty-eight million, one hundred fifty-seven thousand, four hundred seventy-nine".