72134449202720 has 24 divisors (see below), whose sum is σ = 170417636241804. Its totient is φ = 28853779681024.

The previous prime is 72134449202719. The next prime is 72134449202831. The reversal of 72134449202720 is 2720294443127.

It can be written as a sum of positive squares in 2 ways, for example, as 60487764102544 + 11646685100176 = 7777388^2 + 3412724^2 .

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 3 ways as a sum of consecutive naturals, for example, 225420153599 + ... + 225420153918.

Almost surely, 2^{72134449202720} is an apocalyptic number.

It is an amenable number.

72134449202720 is an abundant number, since it is smaller than the sum of its proper divisors (98283187039084).

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

72134449202720 is a wasteful number, since it uses less digits than its factorization.

72134449202720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450840307532 (or 450840307524 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 72134449202720 in words is "seventy-two trillion, one hundred thirty-four billion, four hundred forty-nine million, two hundred two thousand, seven hundred twenty".