57978192849 has 4 divisors (see below), whose sum is σ = 77304257136. Its totient is φ = 38652128564.

The previous prime is 57978192829. The next prime is 57978192863. The reversal of 57978192849 is 94829187975.

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 57978192849 - 2¹⁵ = 57978160081 is a prime.

It is a super-2 number, since 2×57978192849² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57978192829) 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, 9663032139 + ... + 9663032144.

It is an arithmetic number, because the mean of its divisors is an integer number (19326064284).

Almost surely, 2^57978192849 is an apocalyptic number.

It is an amenable number.

57978192849 is a deficient number, since it is larger than the sum of its proper divisors (19326064287).

57978192849 is a wasteful number, since it uses less digits than its factorization.

57978192849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326064286.

The product of its digits is 91445760, while the sum is 69.

The spelling of 57978192849 in words is "fifty-seven billion, nine hundred seventy-eight million, one hundred ninety-two thousand, eight hundred forty-nine".