172302642355 has 4 divisors (see below), whose sum is σ = 206763170832. Its totient is φ = 137842113880.

The previous prime is 172302642353. The next prime is 172302642373. The reversal of 172302642355 is 553246203271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553246203271 = 977 ⋅566270423.

It is not a de Polignac number, because 172302642355 - 2¹ = 172302642353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172302642353) 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 3 ways as a sum of consecutive naturals, for example, 17230264231 + ... + 17230264240.

It is an arithmetic number, because the mean of its divisors is an integer number (51690792708).

Almost surely, 2^172302642355 is an apocalyptic number.

172302642355 is a deficient number, since it is larger than the sum of its proper divisors (34460528477).

172302642355 is an equidigital number, since it uses as much as digits as its factorization.

172302642355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34460528476.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 172302642355 in words is "one hundred seventy-two billion, three hundred two million, six hundred forty-two thousand, three hundred fifty-five".