55681910466 has 64 divisors (see below), whose sum is σ = 145125727488. Its totient is φ = 13821493248.

The previous prime is 55681910443. The next prime is 55681910503. The reversal of 55681910466 is 66401918655.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2990175 + ... + 3008738.

It is an arithmetic number, because the mean of its divisors is an integer number (2267589492).

Almost surely, 2^55681910466 is an apocalyptic number.

55681910466 is an abundant number, since it is smaller than the sum of its proper divisors (89443817022).

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

55681910466 is a wasteful number, since it uses less digits than its factorization.

55681910466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998955.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 55681910466 in words is "fifty-five billion, six hundred eighty-one million, nine hundred ten thousand, four hundred sixty-six".