172145530092 has 24 divisors (see below), whose sum is σ = 404604826416. Its totient is φ = 56962997248.

The previous prime is 172145530061. The next prime is 172145530093. The reversal of 172145530092 is 290035541271.

It is a self number, because there is not a number n which added to its sum of digits gives 172145530092.

It is not an unprimeable number, because it can be changed into a prime (172145530093) 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, 52354053 + ... + 52357340.

It is an arithmetic number, because the mean of its divisors is an integer number (16858534434).

Almost surely, 2^172145530092 is an apocalyptic number.

172145530092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172145530092 is an abundant number, since it is smaller than the sum of its proper divisors (232459296324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172145530092 is a wasteful number, since it uses less digits than its factorization.

172145530092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104711537 (or 104711535 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 172145530092 in words is "one hundred seventy-two billion, one hundred forty-five million, five hundred thirty thousand, ninety-two".