55120586766 has 72 divisors (see below), whose sum is σ = 135344687400. Its totient is φ = 14919829344.

The previous prime is 55120586749. The next prime is 55120586783. The reversal of 55120586766 is 66768502155.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55120586749) and next prime (55120586783).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 153541 + ... + 365808.

It is an arithmetic number, because the mean of its divisors is an integer number (1879787325).

Almost surely, 2^55120586766 is an apocalyptic number.

55120586766 is an abundant number, since it is smaller than the sum of its proper divisors (80224100634).

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

55120586766 is a wasteful number, since it uses less digits than its factorization.

55120586766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519406 (or 519380 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 55120586766 in words is "fifty-five billion, one hundred twenty million, five hundred eighty-six thousand, seven hundred sixty-six".