57081023999 has 4 divisors (see below), whose sum is σ = 60085288440. Its totient is φ = 54076759560.

The previous prime is 57081023969. The next prime is 57081024001. The reversal of 57081023999 is 99932018075.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57081023999 - 2²⁰ = 57079975423 is a prime.

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 57081023999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57081023929) 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, 1502132192 + ... + 1502132229.

It is an arithmetic number, because the mean of its divisors is an integer number (15021322110).

Almost surely, 2^57081023999 is an apocalyptic number.

57081023999 is a deficient number, since it is larger than the sum of its proper divisors (3004264441).

57081023999 is a wasteful number, since it uses less digits than its factorization.

57081023999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004264440.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 57081023999 in words is "fifty-seven billion, eighty-one million, twenty-three thousand, nine hundred ninety-nine".