55691568680 has 128 divisors (see below), whose sum is σ = 144701251200. Its totient is φ = 19098240000.

The previous prime is 55691568677. The next prime is 55691568701. The reversal of 55691568680 is 8686519655.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497930 + ... + 599430.

It is an arithmetic number, because the mean of its divisors is an integer number (1130478525).

Almost surely, 2^55691568680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55691568680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72350625600).

55691568680 is an abundant number, since it is smaller than the sum of its proper divisors (89009682520).

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

55691568680 is a wasteful number, since it uses less digits than its factorization.

55691568680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101595 (or 101591 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 59.

The spelling of 55691568680 in words is "fifty-five billion, six hundred ninety-one million, five hundred sixty-eight thousand, six hundred eighty".