72264018769 has 4 divisors (see below), whose sum is σ = 72361279296. Its totient is φ = 72166758244.

The previous prime is 72264018737. The next prime is 72264018781. The reversal of 72264018769 is 96781046227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96781046227 = 149 ⋅649537223.

It is a cyclic number.

It is not a de Polignac number, because 72264018769 - 2⁵ = 72264018737 is a prime.

It is a super-2 number, since 2×72264018769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72264018709) 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, 48629149 + ... + 48630634.

It is an arithmetic number, because the mean of its divisors is an integer number (18090319824).

Almost surely, 2^72264018769 is an apocalyptic number.

It is an amenable number.

72264018769 is a deficient number, since it is larger than the sum of its proper divisors (97260527).

72264018769 is an equidigital number, since it uses as much as digits as its factorization.

72264018769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97260526.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 72264018769 in words is "seventy-two billion, two hundred sixty-four million, eighteen thousand, seven hundred sixty-nine".