173887039872 has 512 divisors, whose sum is σ = 634050278400. Its totient is φ = 45685555200.

The previous prime is 173887039829. The next prime is 173887039889. The reversal of 173887039872 is 278930788371.

173887039872 is a `hidden beast` number, since 173 + 8 + 8 + 7 + 0 + 398 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96549372 + ... + 96551172.

It is an arithmetic number, because the mean of its divisors is an integer number (1238379450).

Almost surely, 2^173887039872 is an apocalyptic number.

173887039872 is a gapful number since it is divisible by the number (12) 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 173887039872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317025139200).

173887039872 is an abundant number, since it is smaller than the sum of its proper divisors (460163238528).

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

173887039872 is a wasteful number, since it uses less digits than its factorization.

173887039872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 173887039872 in words is "one hundred seventy-three billion, eight hundred eighty-seven million, thirty-nine thousand, eight hundred seventy-two".