72447572727465 has 32 divisors (see below), whose sum is σ = 132175843099776. Its totient is φ = 33568468085760.

The previous prime is 72447572727437. The next prime is 72447572727503. The reversal of 72447572727465 is 56472727574427.

It is a happy number.

It is not a de Polignac number, because 72447572727465 - 2²⁷ = 72447438509737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72447572727465.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10927232391 + ... + 10927239020.

It is an arithmetic number, because the mean of its divisors is an integer number (4130495096868).

Almost surely, 2^{72447572727465} is an apocalyptic number.

It is an amenable number.

72447572727465 is a deficient number, since it is larger than the sum of its proper divisors (59728270372311).

72447572727465 is a wasteful number, since it uses less digits than its factorization.

72447572727465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21854471449.

The product of its digits is 1290777600, while the sum is 69.

The spelling of 72447572727465 in words is "seventy-two trillion, four hundred forty-seven billion, five hundred seventy-two million, seven hundred twenty-seven thousand, four hundred sixty-five".