2172946281450 has 48 divisors (see below), whose sum is σ = 6158750606400. Its totient is φ = 496673435520.

The previous prime is 2172946281437. The next prime is 2172946281481. The reversal of 2172946281450 is 541826492712.

It is a happy number.

It is a super-2 number, since 2×2172946281450² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2172946281393 and 2172946281402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1034735275 + ... + 1034737374.

It is an arithmetic number, because the mean of its divisors is an integer number (128307304300).

Almost surely, 2^{2172946281450} is an apocalyptic number.

2172946281450 is an abundant number, since it is smaller than the sum of its proper divisors (3985804324950).

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

2172946281450 is a wasteful number, since it uses less digits than its factorization.

2172946281450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069472671 (or 2069472666 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 2172946281450 in words is "two trillion, one hundred seventy-two billion, nine hundred forty-six million, two hundred eighty-one thousand, four hundred fifty".