172023410652251 has 4 divisors (see below), whose sum is σ = 172023465547272. Its totient is φ = 172023355757232.

The previous prime is 172023410652229. The next prime is 172023410652281. The reversal of 172023410652251 is 152256014320271.

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 172023410652251 - 2¹⁰ = 172023410651227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172023410652199 and 172023410652208.

It is not an unprimeable number, because it can be changed into a prime (172023410652281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22442810 + ... + 29115743.

It is an arithmetic number, because the mean of its divisors is an integer number (43005866386818).

Almost surely, 2^{172023410652251} is an apocalyptic number.

172023410652251 is a deficient number, since it is larger than the sum of its proper divisors (54895021).

172023410652251 is an equidigital number, since it uses as much as digits as its factorization.

172023410652251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54895020.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 172023410652251 in words is "one hundred seventy-two trillion, twenty-three billion, four hundred ten million, six hundred fifty-two thousand, two hundred fifty-one".