172400325888 has 144 divisors (see below), whose sum is σ = 526477625856. Its totient is φ = 49060608000.

The previous prime is 172400325871. The next prime is 172400325907. The reversal of 172400325888 is 888523004271.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 1285495 + ... + 1413257.

It is an arithmetic number, because the mean of its divisors is an integer number (3656094624).

Almost surely, 2^172400325888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172400325888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263238812928).

172400325888 is an abundant number, since it is smaller than the sum of its proper divisors (354077299968).

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

172400325888 is a wasteful number, since it uses less digits than its factorization.

172400325888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128040 (or 128026 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 172400325888 in words is "one hundred seventy-two billion, four hundred million, three hundred twenty-five thousand, eight hundred eighty-eight".