72533716426565 has 16 divisors (see below), whose sum is σ = 87061608691200. Its totient is φ = 58012875430272.

The previous prime is 72533716426541. The next prime is 72533716426631. The reversal of 72533716426565 is 56562461733527.

It is a cyclic number.

It is not a de Polignac number, because 72533716426565 - 2¹² = 72533716422469 is a prime.

It is a super-2 number, since 2×72533716426565² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72533716426498 and 72533716426507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398097956 + ... + 398280114.

It is an arithmetic number, because the mean of its divisors is an integer number (5441350543200).

Almost surely, 2^{72533716426565} is an apocalyptic number.

It is an amenable number.

72533716426565 is a deficient number, since it is larger than the sum of its proper divisors (14527892264635).

72533716426565 is a wasteful number, since it uses less digits than its factorization.

72533716426565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201076.

The product of its digits is 190512000, while the sum is 62.

The spelling of 72533716426565 in words is "seventy-two trillion, five hundred thirty-three billion, seven hundred sixteen million, four hundred twenty-six thousand, five hundred sixty-five".