56661666150 has 24 divisors (see below), whose sum is σ = 140520932424. Its totient is φ = 15109777600.

The previous prime is 56661666143. The next prime is 56661666151. The reversal of 56661666150 is 5166616665.

It is a self number, because there is not a number n which added to its sum of digits gives 56661666150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56661666151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188872071 + ... + 188872370.

It is an arithmetic number, because the mean of its divisors is an integer number (5855038851).

Almost surely, 2^56661666150 is an apocalyptic number.

56661666150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56661666150 is an abundant number, since it is smaller than the sum of its proper divisors (83859266274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56661666150 is a wasteful number, since it uses less digits than its factorization.

56661666150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377744456 (or 377744451 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 56661666150 in words is "fifty-six billion, six hundred sixty-one million, six hundred sixty-six thousand, one hundred fifty".