172829860157 has 8 divisors (see below), whose sum is σ = 174395207736. Its totient is φ = 171265142272.

The previous prime is 172829860141. The next prime is 172829860183. The reversal of 172829860157 is 751068928271.

It can be written as a sum of positive squares in 4 ways, for example, as 19201922041 + 153627938116 = 138571^2 + 391954^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172829860157 - 2⁴ = 172829860141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172829860657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402983 + ... + 712779.

It is an arithmetic number, because the mean of its divisors is an integer number (21799400967).

Almost surely, 2^172829860157 is an apocalyptic number.

It is an amenable number.

172829860157 is a deficient number, since it is larger than the sum of its proper divisors (1565347579).

172829860157 is a wasteful number, since it uses less digits than its factorization.

172829860157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314847.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 172829860157 in words is "one hundred seventy-two billion, eight hundred twenty-nine million, eight hundred sixty thousand, one hundred fifty-seven".