57218399371 has 8 divisors (see below), whose sum is σ = 65436267744. Its totient is φ = 49011483840.

The previous prime is 57218399323. The next prime is 57218399401. The reversal of 57218399371 is 17399381275.

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

It is a cyclic number.

It is not a de Polignac number, because 57218399371 - 2²¹ = 57216302219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57218399321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2727010 + ... + 2747911.

It is an arithmetic number, because the mean of its divisors is an integer number (8179533468).

Almost surely, 2^57218399371 is an apocalyptic number.

57218399371 is a deficient number, since it is larger than the sum of its proper divisors (8217868373).

57218399371 is a wasteful number, since it uses less digits than its factorization.

57218399371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476421.

The product of its digits is 2857680, while the sum is 55.

The spelling of 57218399371 in words is "fifty-seven billion, two hundred eighteen million, three hundred ninety-nine thousand, three hundred seventy-one".