56675420357 has 4 divisors (see below), whose sum is σ = 56761162956. Its totient is φ = 56589677760.

The previous prime is 56675420323. The next prime is 56675420383. The reversal of 56675420357 is 75302457665.

It is a Cunningham number, because it is equal to 238066²+1.

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 45000833956 + 11674586401 = 212134^2 + 108049^2 .

It is a cyclic number.

It is not a de Polignac number, because 56675420357 - 2⁸ = 56675420101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56675440357) 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, 42870308 + ... + 42871629.

It is an arithmetic number, because the mean of its divisors is an integer number (14190290739).

Almost surely, 2^56675420357 is an apocalyptic number.

It is an amenable number.

56675420357 is a deficient number, since it is larger than the sum of its proper divisors (85742599).

56675420357 is an equidigital number, since it uses as much as digits as its factorization.

56675420357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85742598.

The product of its (nonzero) digits is 5292000, while the sum is 50.

The spelling of 56675420357 in words is "fifty-six billion, six hundred seventy-five million, four hundred twenty thousand, three hundred fifty-seven".