56793092981 has 4 divisors (see below), whose sum is σ = 57047770752. Its totient is φ = 56538415212.

The previous prime is 56793092933. The next prime is 56793092987. The reversal of 56793092981 is 18929039765.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18929039765 = 5 ⋅3785807953.

It is a cyclic number.

It is not a de Polignac number, because 56793092981 - 2¹⁴ = 56793076597 is a prime.

It is a super-2 number, since 2×56793092981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56793092981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56793092987) 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, 127338551 + ... + 127338996.

It is an arithmetic number, because the mean of its divisors is an integer number (14261942688).

Almost surely, 2^56793092981 is an apocalyptic number.

It is an amenable number.

56793092981 is a deficient number, since it is larger than the sum of its proper divisors (254677771).

56793092981 is a wasteful number, since it uses less digits than its factorization.

56793092981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254677770.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 56793092981 in words is "fifty-six billion, seven hundred ninety-three million, ninety-two thousand, nine hundred eighty-one".