56801383973 has 2 divisors, whose sum is σ = 56801383974. Its totient is φ = 56801383972.

The previous prime is 56801383967. The next prime is 56801383987. The reversal of 56801383973 is 37938310865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54187925089 + 2613458884 = 232783^2 + 51122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56801383973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56801383273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28400691986 + 28400691987.

It is an arithmetic number, because the mean of its divisors is an integer number (28400691987).

Almost surely, 2^56801383973 is an apocalyptic number.

It is an amenable number.

56801383973 is a deficient number, since it is larger than the sum of its proper divisors (1).

56801383973 is an equidigital number, since it uses as much as digits as its factorization.

56801383973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 56801383973 in words is "fifty-six billion, eight hundred one million, three hundred eighty-three thousand, nine hundred seventy-three".