172107460305 has 36 divisors (see below), whose sum is σ = 327905022900. Its totient is φ = 83446038720.

The previous prime is 172107460229. The next prime is 172107460309. The reversal of 172107460305 is 503064701271.

It is a happy number.

172107460305 is a `hidden beast` number, since 17 + 210 + 74 + 60 + 305 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40362417216 + 131745043089 = 200904^2 + 362967^2 .

It is not a de Polignac number, because 172107460305 - 2¹³ = 172107452113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172107460305.

It is not an unprimeable number, because it can be changed into a prime (172107460309) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15798730 + ... + 15809619.

Almost surely, 2^172107460305 is an apocalyptic number.

172107460305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172107460305 is a deficient number, since it is larger than the sum of its proper divisors (155797562595).

172107460305 is a wasteful number, since it uses less digits than its factorization.

172107460305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31608382 (or 31608368 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 172107460305 in words is "one hundred seventy-two billion, one hundred seven million, four hundred sixty thousand, three hundred five".