172465639829 has 16 divisors (see below), whose sum is σ = 209208240000. Its totient is φ = 138791729664.

The previous prime is 172465639813. The next prime is 172465639883. The reversal of 172465639829 is 928936564271.

It is not a de Polignac number, because 172465639829 - 2⁴ = 172465639813 is a prime.

It is a super-2 number, since 2×172465639829² (a number of 23 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 (172465636829) 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, 1723079 + ... + 1820420.

It is an arithmetic number, because the mean of its divisors is an integer number (13075515000).

Almost surely, 2^172465639829 is an apocalyptic number.

It is an amenable number.

172465639829 is a deficient number, since it is larger than the sum of its proper divisors (36742600171).

172465639829 is a wasteful number, since it uses less digits than its factorization.

172465639829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543932.

The product of its digits is 39191040, while the sum is 62.

The spelling of 172465639829 in words is "one hundred seventy-two billion, four hundred sixty-five million, six hundred thirty-nine thousand, eight hundred twenty-nine".