55665265806 has 12 divisors (see below), whose sum is σ = 120608075952. Its totient is φ = 18555088596.

The previous prime is 55665265793. The next prime is 55665265807. The reversal of 55665265806 is 60856256655.

55665265806 is a `hidden beast` number, since 5 + 5 + 6 + 6 + 52 + 6 + 580 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665265807) 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 5 ways as a sum of consecutive naturals, for example, 1546257366 + ... + 1546257401.

It is an arithmetic number, because the mean of its divisors is an integer number (10050672996).

Almost surely, 2^55665265806 is an apocalyptic number.

55665265806 is an abundant number, since it is smaller than the sum of its proper divisors (64942810146).

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

55665265806 is a wasteful number, since it uses less digits than its factorization.

55665265806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092514775 (or 3092514772 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 55665265806 in words is "fifty-five billion, six hundred sixty-five million, two hundred sixty-five thousand, eight hundred six".