172097719520 has 48 divisors (see below), whose sum is σ = 406703103408. Its totient is φ = 68818391040.

The previous prime is 172097719501. The next prime is 172097719523. The reversal of 172097719520 is 25917790271.

It is a super-3 number, since 3×172097719520³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172097719523) 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, 377747 + ... + 697773.

It is an arithmetic number, because the mean of its divisors is an integer number (8472981321).

Almost surely, 2^172097719520 is an apocalyptic number.

172097719520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172097719520 is an abundant number, since it is smaller than the sum of its proper divisors (234605383888).

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

172097719520 is a wasteful number, since it uses less digits than its factorization.

172097719520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323403 (or 323395 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 50.

The spelling of 172097719520 in words is "one hundred seventy-two billion, ninety-seven million, seven hundred nineteen thousand, five hundred twenty".