55786260866 has 32 divisors (see below), whose sum is σ = 96209847552. Its totient is φ = 23764466880.

The previous prime is 55786260863. The next prime is 55786260883. The reversal of 55786260866 is 66806268755.

It is a super-2 number, since 2×55786260866² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55786260863) 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 15 ways as a sum of consecutive naturals, for example, 6703340 + ... + 6711656.

It is an arithmetic number, because the mean of its divisors is an integer number (3006557736).

Almost surely, 2^55786260866 is an apocalyptic number.

55786260866 is a deficient number, since it is larger than the sum of its proper divisors (40423586686).

55786260866 is a wasteful number, since it uses less digits than its factorization.

55786260866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11154.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 55786260866 in words is "fifty-five billion, seven hundred eighty-six million, two hundred sixty thousand, eight hundred sixty-six".