172351261383 has 16 divisors (see below), whose sum is σ = 262854809856. Its totient is φ = 98402316480.

The previous prime is 172351261349. The next prime is 172351261391. The reversal of 172351261383 is 383162153271.

It is not a de Polignac number, because 172351261383 - 2¹⁰ = 172351260359 is a prime.

It is a super-2 number, since 2×172351261383² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172351261333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3479766 + ... + 3528947.

It is an arithmetic number, because the mean of its divisors is an integer number (16428425616).

Almost surely, 2^172351261383 is an apocalyptic number.

172351261383 is a deficient number, since it is larger than the sum of its proper divisors (90503548473).

172351261383 is a wasteful number, since it uses less digits than its factorization.

172351261383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009894.

The product of its digits is 181440, while the sum is 42.

The spelling of 172351261383 in words is "one hundred seventy-two billion, three hundred fifty-one million, two hundred sixty-one thousand, three hundred eighty-three".