55221760680 has 32 divisors (see below), whose sum is σ = 165665282400. Its totient is φ = 14725802816.

The previous prime is 55221760679. The next prime is 55221760681. The reversal of 55221760680 is 8606712255.

It is an interprime number because it is at equal distance from previous prime (55221760679) and next prime (55221760681).

It is not an unprimeable number, because it can be changed into a prime (55221760681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230090550 + ... + 230090789.

It is an arithmetic number, because the mean of its divisors is an integer number (5177040075).

Almost surely, 2^55221760680 is an apocalyptic number.

It is an amenable number.

55221760680 is an abundant number, since it is smaller than the sum of its proper divisors (110443521720).

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

55221760680 is a wasteful number, since it uses less digits than its factorization.

55221760680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460181353 (or 460181349 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 55221760680 in words is "fifty-five billion, two hundred twenty-one million, seven hundred sixty thousand, six hundred eighty".