172098097920 has 324 divisors, whose sum is σ = 692658701280. Its totient is φ = 39336579072.

The previous prime is 172098097849. The next prime is 172098097933. The reversal of 172098097920 is 29790890271.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 412041 + ... + 716919.

Almost surely, 2^172098097920 is an apocalyptic number.

172098097920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172098097920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346329350640).

172098097920 is an abundant number, since it is smaller than the sum of its proper divisors (520560603360).

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

172098097920 is a wasteful number, since it uses less digits than its factorization.

172098097920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304920 (or 304896 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 172098097920 in words is "one hundred seventy-two billion, ninety-eight million, ninety-seven thousand, nine hundred twenty".