172001199492 has 48 divisors (see below), whose sum is σ = 447252361920. Its totient is φ = 57163591296.

The previous prime is 172001199407. The next prime is 172001199511. The reversal of 172001199492 is 294991100271.

It is a happy number.

172001199492 is a `hidden beast` number, since 1 + 72 + 0 + 0 + 1 + 1 + 99 + 492 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2326518 + ... + 2399309.

It is an arithmetic number, because the mean of its divisors is an integer number (9317757540).

Almost surely, 2^172001199492 is an apocalyptic number.

172001199492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172001199492 is an abundant number, since it is smaller than the sum of its proper divisors (275251162428).

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

172001199492 is a wasteful number, since it uses less digits than its factorization.

172001199492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726177 (or 4726169 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 172001199492 in words is "one hundred seventy-two billion, one million, one hundred ninety-nine thousand, four hundred ninety-two".