57420385491 has 8 divisors (see below), whose sum is σ = 87497730304. Its totient is φ = 32811648840.

The previous prime is 57420385483. The next prime is 57420385537. The reversal of 57420385491 is 19458302475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57420385491 - 2³ = 57420385483 is a prime.

It is a super-4 number, since 4×57420385491⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57420385491.

It is not an unprimeable number, because it can be changed into a prime (57420385471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367152015 + ... + 1367152056.

It is an arithmetic number, because the mean of its divisors is an integer number (10937216288).

Almost surely, 2^57420385491 is an apocalyptic number.

57420385491 is a deficient number, since it is larger than the sum of its proper divisors (30077344813).

57420385491 is a wasteful number, since it uses less digits than its factorization.

57420385491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734304081.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 57420385491 in words is "fifty-seven billion, four hundred twenty million, three hundred eighty-five thousand, four hundred ninety-one".