161672206055 has 16 divisors (see below), whose sum is σ = 194866992000. Its totient is φ = 128764473600.

The previous prime is 161672206051. The next prime is 161672206061. The reversal of 161672206055 is 550602276161.

161672206055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161672206055 - 2² = 161672206051 is a prime.

It is a super-2 number, since 2×161672206055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161672206051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5541005 + ... + 5570105.

It is an arithmetic number, because the mean of its divisors is an integer number (12179187000).

Almost surely, 2^161672206055 is an apocalyptic number.

161672206055 is a deficient number, since it is larger than the sum of its proper divisors (33194785945).

161672206055 is a wasteful number, since it uses less digits than its factorization.

161672206055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33994.

The product of its (nonzero) digits is 151200, while the sum is 41.

It can be divided in two parts, 16167 and 2206055, that added together give a palindrome (2222222).

The spelling of 161672206055 in words is "one hundred sixty-one billion, six hundred seventy-two million, two hundred six thousand, fifty-five".