72291733775 has 12 divisors (see below), whose sum is σ = 89650437600. Its totient is φ = 57827782080.

The previous prime is 72291733769. The next prime is 72291733799. The reversal of 72291733775 is 57733719227.

It is a happy number.

It is not a de Polignac number, because 72291733775 - 2¹⁴ = 72291717391 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 133466 + ... + 402984.

It is an arithmetic number, because the mean of its divisors is an integer number (7470869800).

Almost surely, 2^72291733775 is an apocalyptic number.

72291733775 is a deficient number, since it is larger than the sum of its proper divisors (17358703825).

72291733775 is a wasteful number, since it uses less digits than its factorization.

72291733775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280258 (or 280253 counting only the distinct ones).

The product of its digits is 3889620, while the sum is 53.

The spelling of 72291733775 in words is "seventy-two billion, two hundred ninety-one million, seven hundred thirty-three thousand, seven hundred seventy-five".