172990278236160 has 3456 divisors, whose sum is σ = 786771529689600. Its totient is φ = 35683703193600.

The previous prime is 172990278236159. The next prime is 172990278236197. The reversal of 172990278236160 is 61632872099271.

172990278236160 is a `hidden beast` number, since 1 + 7 + 2 + 9 + 9 + 0 + 2 + 7 + 8 + 2 + 3 + 616 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3456).

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 (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 444705085246 + ... + 444705085634.

It is an arithmetic number, because the mean of its divisors is an integer number (227653799100).

Almost surely, 2^{172990278236160} is an apocalyptic number.

172990278236160 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 172990278236160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393385764844800).

172990278236160 is an abundant number, since it is smaller than the sum of its proper divisors (613781251453440).

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

172990278236160 is a wasteful number, since it uses less digits than its factorization.

172990278236160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 172990278236160 in words is "one hundred seventy-two trillion, nine hundred ninety billion, two hundred seventy-eight million, two hundred thirty-six thousand, one hundred sixty".