72644042007730 has 16 divisors (see below), whose sum is σ = 130759372643544. Its totient is φ = 29057595240960.

The previous prime is 72644042007703. The next prime is 72644042007737. The reversal of 72644042007730 is 3770024044627.

72644042007730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72385706664441 + 258335343289 = 8507979^2 + 508267^2 .

It is not an unprimeable number, because it can be changed into a prime (72644042007737) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25523704 + ... + 28226716.

Almost surely, 2^{72644042007730} is an apocalyptic number.

72644042007730 is a deficient number, since it is larger than the sum of its proper divisors (58115330635814).

72644042007730 is a wasteful number, since it uses less digits than its factorization.

72644042007730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390541.

The product of its (nonzero) digits is 1580544, while the sum is 46.

The spelling of 72644042007730 in words is "seventy-two trillion, six hundred forty-four billion, forty-two million, seven thousand, seven hundred thirty".