56840756381 has 4 divisors (see below), whose sum is σ = 57110144064. Its totient is φ = 56571368700.

The previous prime is 56840756341. The next prime is 56840756389. The reversal of 56840756381 is 18365704865.

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 56840756381 - 2³⁴ = 39660887197 is a prime.

It is a super-2 number, since 2×56840756381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56840756389) 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, 134693525 + ... + 134693946.

It is an arithmetic number, because the mean of its divisors is an integer number (14277536016).

Almost surely, 2^56840756381 is an apocalyptic number.

It is an amenable number.

56840756381 is a deficient number, since it is larger than the sum of its proper divisors (269387683).

56840756381 is a wasteful number, since it uses less digits than its factorization.

56840756381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269387682.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 56840756381 in words is "fifty-six billion, eight hundred forty million, seven hundred fifty-six thousand, three hundred eighty-one".