56055150661 has 8 divisors (see below), whose sum is σ = 56192216024. Its totient is φ = 55918149120.

The previous prime is 56055150643. The next prime is 56055150703. The reversal of 56055150661 is 16605155065.

It can be written as a sum of positive squares in 4 ways, for example, as 28604956900 + 27450193761 = 169130^2 + 165681^2 .

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 56055150661 - 2¹³ = 56055142469 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 (56055150601) 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, 2070931 + ... + 2097823.

It is an arithmetic number, because the mean of its divisors is an integer number (7024027003).

Almost surely, 2^56055150661 is an apocalyptic number.

It is an amenable number.

56055150661 is a deficient number, since it is larger than the sum of its proper divisors (137065363).

56055150661 is a wasteful number, since it uses less digits than its factorization.

56055150661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31911.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 56055150661 in words is "fifty-six billion, fifty-five million, one hundred fifty thousand, six hundred sixty-one".