2172151660055 has 32 divisors (see below), whose sum is σ = 2878854967296. Its totient is φ = 1563209391744.

The previous prime is 2172151660031. The next prime is 2172151660057. The reversal of 2172151660055 is 5500661512712.

It is not a de Polignac number, because 2172151660055 - 2¹⁰ = 2172151659031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2172151659994 and 2172151660021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172151660057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361034 + ... + 2115336.

It is an arithmetic number, because the mean of its divisors is an integer number (89964217728).

Almost surely, 2^{2172151660055} is an apocalyptic number.

2172151660055 is a deficient number, since it is larger than the sum of its proper divisors (706703307241).

2172151660055 is a wasteful number, since it uses less digits than its factorization.

2172151660055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754807.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 2172151660055 in words is "two trillion, one hundred seventy-two billion, one hundred fifty-one million, six hundred sixty thousand, fifty-five".