72642882643 has 8 divisors (see below), whose sum is σ = 74215374080. Its totient is φ = 71084752200.

The previous prime is 72642882569. The next prime is 72642882671. The reversal of 72642882643 is 34628824627.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72642882643 - 2⁹ = 72642882131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72642885643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3580023 + ... + 3600256.

It is an arithmetic number, because the mean of its divisors is an integer number (9276921760).

Almost surely, 2^72642882643 is an apocalyptic number.

72642882643 is a deficient number, since it is larger than the sum of its proper divisors (1572491437).

72642882643 is a wasteful number, since it uses less digits than its factorization.

72642882643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180497.

The product of its digits is 6193152, while the sum is 52.

The spelling of 72642882643 in words is "seventy-two billion, six hundred forty-two million, eight hundred eighty-two thousand, six hundred forty-three".