56770927781 has 8 divisors (see below), whose sum is σ = 59344051200. Its totient is φ = 54244167120.

The previous prime is 56770927753. The next prime is 56770927847. The reversal of 56770927781 is 18772907765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56770927781 - 2¹⁰ = 56770926757 is a prime.

It is a super-2 number, since 2×56770927781² (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 56770927781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56770927721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11588186 + ... + 11593083.

It is an arithmetic number, because the mean of its divisors is an integer number (7418006400).

Almost surely, 2^56770927781 is an apocalyptic number.

It is an amenable number.

56770927781 is a deficient number, since it is larger than the sum of its proper divisors (2573123419).

56770927781 is a wasteful number, since it uses less digits than its factorization.

56770927781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23181379.

The product of its (nonzero) digits is 10372320, while the sum is 59.

The spelling of 56770927781 in words is "fifty-six billion, seven hundred seventy million, nine hundred twenty-seven thousand, seven hundred eighty-one".