172214770505 has 16 divisors (see below), whose sum is σ = 208326881280. Its totient is φ = 136659483072.

The previous prime is 172214770501. The next prime is 172214770513. The reversal of 172214770505 is 505077412271.

It is a cyclic number.

It is not a de Polignac number, because 172214770505 - 2² = 172214770501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172214770501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3485111 + ... + 3534179.

It is an arithmetic number, because the mean of its divisors is an integer number (13020430080).

Almost surely, 2^172214770505 is an apocalyptic number.

It is an amenable number.

172214770505 is a deficient number, since it is larger than the sum of its proper divisors (36112110775).

172214770505 is a wasteful number, since it uses less digits than its factorization.

172214770505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54728.

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 172214770505 in words is "one hundred seventy-two billion, two hundred fourteen million, seven hundred seventy thousand, five hundred five".