57819581361 has 48 divisors (see below), whose sum is σ = 86203218816. Its totient is φ = 37323756288.

The previous prime is 57819581317. The next prime is 57819581387. The reversal of 57819581361 is 16318591875.

It is a happy number.

57819581361 is a `hidden beast` number, since 57 + 8 + 1 + 9 + 581 + 3 + 6 + 1 = 666.

It is not a de Polignac number, because 57819581361 - 2¹⁵ = 57819548593 is a prime.

It is a super-2 number, since 2×57819581361² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57819581298 and 57819581307.

It is not an unprimeable number, because it can be changed into a prime (57819581461) 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 47 ways as a sum of consecutive naturals, for example, 23861596 + ... + 23864018.

It is an arithmetic number, because the mean of its divisors is an integer number (1795900392).

Almost surely, 2^57819581361 is an apocalyptic number.

It is an amenable number.

57819581361 is a deficient number, since it is larger than the sum of its proper divisors (28383637455).

57819581361 is a wasteful number, since it uses less digits than its factorization.

57819581361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982 (or 2979 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The spelling of 57819581361 in words is "fifty-seven billion, eight hundred nineteen million, five hundred eighty-one thousand, three hundred sixty-one".