55766481666 has 32 divisors (see below), whose sum is σ = 128022887040. Its totient is φ = 15863700096.

The previous prime is 55766481629. The next prime is 55766481679. The reversal of 55766481666 is 66618466755.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2889451 + ... + 2908686.

It is an arithmetic number, because the mean of its divisors is an integer number (4000715220).

Almost surely, 2^55766481666 is an apocalyptic number.

55766481666 is an abundant number, since it is smaller than the sum of its proper divisors (72256405374).

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

55766481666 is a wasteful number, since it uses less digits than its factorization.

55766481666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798378.

The product of its digits is 43545600, while the sum is 60.

The spelling of 55766481666 in words is "fifty-five billion, seven hundred sixty-six million, four hundred eighty-one thousand, six hundred sixty-six".