72174166446 has 16 divisors (see below), whose sum is σ = 144361790208. Its totient is φ = 24055812600.

The previous prime is 72174166433. The next prime is 72174166457. The reversal of 72174166446 is 64466147127.

It is a super-2 number, since 2×72174166446² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72174166395 and 72174166404.

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 7 ways as a sum of consecutive naturals, for example, 490320 + ... + 620291.

It is an arithmetic number, because the mean of its divisors is an integer number (9022611888).

Almost surely, 2^72174166446 is an apocalyptic number.

72174166446 is an abundant number, since it is smaller than the sum of its proper divisors (72187623762).

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

72174166446 is a wasteful number, since it uses less digits than its factorization.

72174166446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121447.

The product of its digits is 1354752, while the sum is 48.

The spelling of 72174166446 in words is "seventy-two billion, one hundred seventy-four million, one hundred sixty-six thousand, four hundred forty-six".