72644882405 has 16 divisors (see below), whose sum is σ = 90282142080. Its totient is φ = 56048263488.

The previous prime is 72644882377. The next prime is 72644882411. The reversal of 72644882405 is 50428844627.

It is a cyclic number.

It is not a de Polignac number, because 72644882405 - 2¹⁰ = 72644881381 is a prime.

It is a Curzon number.

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, 155657 + ... + 411726.

It is an arithmetic number, because the mean of its divisors is an integer number (5642633880).

Almost surely, 2^72644882405 is an apocalyptic number.

It is an amenable number.

72644882405 is a deficient number, since it is larger than the sum of its proper divisors (17637259675).

72644882405 is a wasteful number, since it uses less digits than its factorization.

72644882405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568300.

The product of its (nonzero) digits is 3440640, while the sum is 50.

The spelling of 72644882405 in words is "seventy-two billion, six hundred forty-four million, eight hundred eighty-two thousand, four hundred five".