56556722311 has 4 divisors (see below), whose sum is σ = 56560097032. Its totient is φ = 56553347592.

The previous prime is 56556722293. The next prime is 56556722329. The reversal of 56556722311 is 11322765565.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56556722293) and next prime (56556722329).

It is a cyclic number.

It is not a de Polignac number, because 56556722311 - 2¹⁵ = 56556689543 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 (56556728311) 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, 1662096 + ... + 1695781.

It is an arithmetic number, because the mean of its divisors is an integer number (14140024258).

Almost surely, 2^56556722311 is an apocalyptic number.

56556722311 is a deficient number, since it is larger than the sum of its proper divisors (3374721).

56556722311 is a wasteful number, since it uses less digits than its factorization.

56556722311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374720.

The product of its digits is 378000, while the sum is 43.

The spelling of 56556722311 in words is "fifty-six billion, five hundred fifty-six million, seven hundred twenty-two thousand, three hundred eleven".