72204515450 has 12 divisors (see below), whose sum is σ = 134300398830. Its totient is φ = 28881806160.

The previous prime is 72204515447. The next prime is 72204515519. The reversal of 72204515450 is 5451540227.

It can be written as a sum of positive squares in 3 ways, for example, as 68954033281 + 3250482169 = 262591^2 + 57013^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72204515450.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722045105 + ... + 722045204.

Almost surely, 2^72204515450 is an apocalyptic number.

72204515450 is a deficient number, since it is larger than the sum of its proper divisors (62095883380).

72204515450 is a wasteful number, since it uses less digits than its factorization.

72204515450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444090321 (or 1444090316 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 72204515450 in words is "seventy-two billion, two hundred four million, five hundred fifteen thousand, four hundred fifty".