56862439853381 has 4 divisors (see below), whose sum is σ = 56943556030764. Its totient is φ = 56781323676000.

The previous prime is 56862439853347. The next prime is 56862439853393. The reversal of 56862439853381 is 18335893426865.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52164015121156 + 4698424732225 = 7222466^2 + 2167585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56862439853381 is a prime.

It is a super-3 number, since 3×56862439853381³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56862439853311) 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, 40558087640 + ... + 40558089041.

It is an arithmetic number, because the mean of its divisors is an integer number (14235889007691).

Almost surely, 2^{56862439853381} is an apocalyptic number.

It is an amenable number.

56862439853381 is a deficient number, since it is larger than the sum of its proper divisors (81116177383).

56862439853381 is an equidigital number, since it uses as much as digits as its factorization.

56862439853381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81116177382.

The product of its digits is 895795200, while the sum is 71.

The spelling of 56862439853381 in words is "fifty-six trillion, eight hundred sixty-two billion, four hundred thirty-nine million, eight hundred fifty-three thousand, three hundred eighty-one".