72544282690 has 32 divisors (see below), whose sum is σ = 142527294144. Its totient is φ = 26365535040.

The previous prime is 72544282651. The next prime is 72544282697. The reversal of 72544282690 is 9628244527.

It is a super-2 number, since 2×72544282690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72544282697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28752 + ... + 381988.

It is an arithmetic number, because the mean of its divisors is an integer number (4453977942).

Almost surely, 2^72544282690 is an apocalyptic number.

72544282690 is a deficient number, since it is larger than the sum of its proper divisors (69983011454).

72544282690 is a wasteful number, since it uses less digits than its factorization.

72544282690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355122.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 72544282690 in words is "seventy-two billion, five hundred forty-four million, two hundred eighty-two thousand, six hundred ninety".