72273762571 has 4 divisors (see below), whose sum is σ = 72573653944. Its totient is φ = 71973871200.

The previous prime is 72273762559. The next prime is 72273762601. The reversal of 72273762571 is 17526737227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72273762571 - 2¹⁷ = 72273631499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72273762551) 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, 149945325 + ... + 149945806.

It is an arithmetic number, because the mean of its divisors is an integer number (18143413486).

Almost surely, 2^72273762571 is an apocalyptic number.

72273762571 is a deficient number, since it is larger than the sum of its proper divisors (299891373).

72273762571 is a wasteful number, since it uses less digits than its factorization.

72273762571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299891372.

The product of its digits is 1728720, while the sum is 49.

The spelling of 72273762571 in words is "seventy-two billion, two hundred seventy-three million, seven hundred sixty-two thousand, five hundred seventy-one".