56783843157 has 4 divisors (see below), whose sum is σ = 75711790880. Its totient is φ = 37855895436.

The previous prime is 56783843147. The next prime is 56783843167. The reversal of 56783843157 is 75134838765.

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 an interprime number because it is at equal distance from previous prime (56783843147) and next prime (56783843167).

It is not a de Polignac number, because 56783843157 - 2²² = 56779648853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56783843097 and 56783843106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56783843147) 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 3 ways as a sum of consecutive naturals, for example, 9463973857 + ... + 9463973862.

It is an arithmetic number, because the mean of its divisors is an integer number (18927947720).

Almost surely, 2^56783843157 is an apocalyptic number.

It is an amenable number.

56783843157 is a deficient number, since it is larger than the sum of its proper divisors (18927947723).

56783843157 is a wasteful number, since it uses less digits than its factorization.

56783843157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18927947722.

The product of its digits is 16934400, while the sum is 57.

The spelling of 56783843157 in words is "fifty-six billion, seven hundred eighty-three million, eight hundred forty-three thousand, one hundred fifty-seven".