55651515166 has 32 divisors (see below), whose sum is σ = 94677287040. Its totient is φ = 24321324384.

The previous prime is 55651515151. The next prime is 55651515167. The reversal of 55651515166 is 66151515655.

It is a happy number.

It is a super-2 number, since 2×55651515166² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651515167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001961 + ... + 1056043.

It is an arithmetic number, because the mean of its divisors is an integer number (2958665220).

Almost surely, 2^55651515166 is an apocalyptic number.

55651515166 is a deficient number, since it is larger than the sum of its proper divisors (39025771874).

55651515166 is a wasteful number, since it uses less digits than its factorization.

55651515166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56200.

The product of its digits is 675000, while the sum is 46.

The spelling of 55651515166 in words is "fifty-five billion, six hundred fifty-one million, five hundred fifteen thousand, one hundred sixty-six".