55165550667 has 4 divisors (see below), whose sum is σ = 73554067560. Its totient is φ = 36777033776.

The previous prime is 55165550641. The next prime is 55165550707. The reversal of 55165550667 is 76605556155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55165550667 - 2¹⁴ = 55165534283 is a prime.

It is a super-3 number, since 3×55165550667³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55165550617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9194258442 + ... + 9194258447.

It is an arithmetic number, because the mean of its divisors is an integer number (18388516890).

Almost surely, 2^55165550667 is an apocalyptic number.

55165550667 is a deficient number, since it is larger than the sum of its proper divisors (18388516893).

55165550667 is a wasteful number, since it uses less digits than its factorization.

55165550667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18388516892.

The product of its (nonzero) digits is 4725000, while the sum is 51.

The spelling of 55165550667 in words is "fifty-five billion, one hundred sixty-five million, five hundred fifty thousand, six hundred sixty-seven".