72269585447 has 4 divisors (see below), whose sum is σ = 75411741360. Its totient is φ = 69127429536.

The previous prime is 72269585431. The next prime is 72269585449. The reversal of 72269585447 is 74458596227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74458596227 = 2011 ⋅37025657.

It is a cyclic number.

It is not a de Polignac number, because 72269585447 - 2⁴ = 72269585431 is a prime.

It is a super-4 number, since 4×72269585447⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72269585449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571077922 + ... + 1571077967.

It is an arithmetic number, because the mean of its divisors is an integer number (18852935340).

Almost surely, 2^72269585447 is an apocalyptic number.

72269585447 is a deficient number, since it is larger than the sum of its proper divisors (3142155913).

72269585447 is a wasteful number, since it uses less digits than its factorization.

72269585447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142155912.

The product of its digits is 33868800, while the sum is 59.

The spelling of 72269585447 in words is "seventy-two billion, two hundred sixty-nine million, five hundred eighty-five thousand, four hundred forty-seven".