72292928641 has 4 divisors (see below), whose sum is σ = 72294247872. Its totient is φ = 72291609412.

The previous prime is 72292928623. The next prime is 72292928651. The reversal of 72292928641 is 14682929227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72292928641 - 2¹³ = 72292920449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72292928611) 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 3 ways as a sum of consecutive naturals, for example, 573685 + ... + 688258.

It is an arithmetic number, because the mean of its divisors is an integer number (18073561968).

Almost surely, 2^72292928641 is an apocalyptic number.

It is an amenable number.

72292928641 is a deficient number, since it is larger than the sum of its proper divisors (1319231).

72292928641 is a wasteful number, since it uses less digits than its factorization.

72292928641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319230.

The product of its digits is 1741824, while the sum is 52.

The spelling of 72292928641 in words is "seventy-two billion, two hundred ninety-two million, nine hundred twenty-eight thousand, six hundred forty-one".