172382228785 has 32 divisors (see below), whose sum is σ = 236629118880. Its totient is φ = 119426531328.

The previous prime is 172382228773. The next prime is 172382228803. The reversal of 172382228785 is 587822283271.

It can be written as a sum of positive squares in 16 ways, for example, as 150158575009 + 22223653776 = 387503^2 + 149076^2 .

It is not a de Polignac number, because 172382228785 - 2²⁵ = 172348674353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96661 + ... + 595069.

It is an arithmetic number, because the mean of its divisors is an integer number (7394659965).

Almost surely, 2^172382228785 is an apocalyptic number.

It is an amenable number.

172382228785 is a deficient number, since it is larger than the sum of its proper divisors (64246890095).

172382228785 is a wasteful number, since it uses less digits than its factorization.

172382228785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498757.

The product of its digits is 6021120, while the sum is 55.

The spelling of 172382228785 in words is "one hundred seventy-two billion, three hundred eighty-two million, two hundred twenty-eight thousand, seven hundred eighty-five".