57198944818 has 8 divisors (see below), whose sum is σ = 85804277148. Its totient is φ = 28597519104.

The previous prime is 57198944653. The next prime is 57198944833. The reversal of 57198944818 is 81844989175.

It can be written as a sum of positive squares in 2 ways, for example, as 54547003809 + 2651941009 = 233553^2 + 51497^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 57198944818.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939771 + ... + 998782.

Almost surely, 2^57198944818 is an apocalyptic number.

57198944818 is a deficient number, since it is larger than the sum of its proper divisors (28605332330).

57198944818 is a wasteful number, since it uses less digits than its factorization.

57198944818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953308.

The product of its digits is 23224320, while the sum is 64.

The spelling of 57198944818 in words is "fifty-seven billion, one hundred ninety-eight million, nine hundred forty-four thousand, eight hundred eighteen".