55770166642172 has 6 divisors (see below), whose sum is σ = 97597791623808. Its totient is φ = 27885083321084.

The previous prime is 55770166642111. The next prime is 55770166642219. The reversal of 55770166642172 is 27124666107755.

It is a happy number.

55770166642172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55770166642172² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971270830268 + ... + 6971270830275.

It is an arithmetic number, because the mean of its divisors is an integer number (16266298603968).

Almost surely, 2^{55770166642172} is an apocalyptic number.

It is an amenable number.

55770166642172 is a deficient number, since it is larger than the sum of its proper divisors (41827624981636).

55770166642172 is a wasteful number, since it uses less digits than its factorization.

55770166642172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13942541660547 (or 13942541660545 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 59.

The spelling of 55770166642172 in words is "fifty-five trillion, seven hundred seventy billion, one hundred sixty-six million, six hundred forty-two thousand, one hundred seventy-two".