172345745376631 has 4 divisors (see below), whose sum is σ = 172357093633432. Its totient is φ = 172334397119832.

The previous prime is 172345745376617. The next prime is 172345745376641. The reversal of 172345745376631 is 136673547543271.

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 172345745376631 - 2⁷ = 172345745376503 is a prime.

It is a super-2 number, since 2×172345745376631² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172345745376611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5674105620 + ... + 5674135993.

It is an arithmetic number, because the mean of its divisors is an integer number (43089273408358).

Almost surely, 2^{172345745376631} is an apocalyptic number.

172345745376631 is a deficient number, since it is larger than the sum of its proper divisors (11348256801).

172345745376631 is a wasteful number, since it uses less digits than its factorization.

172345745376631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348256800.

The product of its digits is 266716800, while the sum is 64.

The spelling of 172345745376631 in words is "one hundred seventy-two trillion, three hundred forty-five billion, seven hundred forty-five million, three hundred seventy-six thousand, six hundred thirty-one".