72204245522000 has 80 divisors (see below), whose sum is σ = 174594771982800. Its totient is φ = 28880886579200.

The previous prime is 72204245521999. The next prime is 72204245522021. The reversal of 72204245522000 is 22554240227.

It can be written as a sum of positive squares in 8 ways, for example, as 24673314266176 + 47530931255824 = 4967224^2 + 6894268^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73369196 + ... + 74346804.

It is an arithmetic number, because the mean of its divisors is an integer number (2182434649785).

Almost surely, 2^{72204245522000} is an apocalyptic number.

It is an amenable number.

72204245522000 is an abundant number, since it is smaller than the sum of its proper divisors (102390526460800).

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

72204245522000 is a wasteful number, since it uses less digits than its factorization.

72204245522000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014561 (or 1014545 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 35.

Adding to 72204245522000 its reverse (22554240227), we get a palindrome (72226799762227).

The spelling of 72204245522000 in words is "seventy-two trillion, two hundred four billion, two hundred forty-five million, five hundred twenty-two thousand".