55155656166 has 32 divisors (see below), whose sum is σ = 119238467040. Its totient is φ = 16907875584.

The previous prime is 55155656131. The next prime is 55155656203. The reversal of 55155656166 is 66165655155.

55155656166 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-3 number, since 3×55155656166³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1293375 + ... + 1335338.

It is an arithmetic number, because the mean of its divisors is an integer number (3726202095).

Almost surely, 2^55155656166 is an apocalyptic number.

55155656166 is an abundant number, since it is smaller than the sum of its proper divisors (64082810874).

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

55155656166 is a wasteful number, since it uses less digits than its factorization.

55155656166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629000.

The product of its digits is 4050000, while the sum is 51.

The spelling of 55155656166 in words is "fifty-five billion, one hundred fifty-five million, six hundred fifty-six thousand, one hundred sixty-six".