172871039880 has 288 divisors, whose sum is σ = 705772267200. Its totient is φ = 35921191680.

The previous prime is 172871039819. The next prime is 172871039897. The reversal of 172871039880 is 88930178271.

It is a happy number.

172871039880 is a `hidden beast` number, since 172 + 8 + 7 + 1 + 0 + 398 + 80 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21451 + ... + 588389.

It is an arithmetic number, because the mean of its divisors is an integer number (2450598150).

Almost surely, 2^172871039880 is an apocalyptic number.

172871039880 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 172871039880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352886133600).

172871039880 is an abundant number, since it is smaller than the sum of its proper divisors (532901227320).

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

172871039880 is a wasteful number, since it uses less digits than its factorization.

172871039880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566985 (or 566967 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 172871039880 in words is "one hundred seventy-two billion, eight hundred seventy-one million, thirty-nine thousand, eight hundred eighty".