2172361254912 has 480 divisors, whose sum is σ = 6928780098240. Its totient is φ = 676477992960.

The previous prime is 2172361254871. The next prime is 2172361254949. The reversal of 2172361254912 is 2194521632712.

2172361254912 is a `hidden beast` number, since 2 + 1 + 7 + 2 + 36 + 125 + 491 + 2 = 666.

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 39 ways as a sum of consecutive naturals, for example, 164056612 + ... + 164069852.

It is an arithmetic number, because the mean of its divisors is an integer number (14434958538).

Almost surely, 2^{2172361254912} 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 2172361254912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3464390049120).

2172361254912 is an abundant number, since it is smaller than the sum of its proper divisors (4756418843328).

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

2172361254912 is a wasteful number, since it uses less digits than its factorization.

2172361254912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13341 (or 13312 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 2172361254912 in words is "two trillion, one hundred seventy-two billion, three hundred sixty-one million, two hundred fifty-four thousand, nine hundred twelve".