56150016661 has 8 divisors (see below), whose sum is σ = 56421281664. Its totient is φ = 55879068480.

The previous prime is 56150016619. The next prime is 56150016667. The reversal of 56150016661 is 16661005165.

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 56150016661 - 2¹³ = 56150008469 is a prime.

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 56150016661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56150016667) 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, 280026 + ... + 436708.

It is an arithmetic number, because the mean of its divisors is an integer number (7052660208).

Almost surely, 2^56150016661 is an apocalyptic number.

It is an amenable number.

56150016661 is a deficient number, since it is larger than the sum of its proper divisors (271265003).

56150016661 is a wasteful number, since it uses less digits than its factorization.

56150016661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158411.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 56150016661 in words is "fifty-six billion, one hundred fifty million, sixteen thousand, six hundred sixty-one".