72534963564489 has 16 divisors (see below), whose sum is σ = 102402580950720. Its totient is φ = 45512009802240.

The previous prime is 72534963564473. The next prime is 72534963564541. The reversal of 72534963564489 is 98446536943527.

It is not a de Polignac number, because 72534963564489 - 2⁴ = 72534963564473 is a prime.

It is a super-2 number, since 2×72534963564489² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72534963564489.

It is not an unprimeable number, because it can be changed into a prime (72534963564409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19158477 + ... + 22630005.

It is an arithmetic number, because the mean of its divisors is an integer number (6400161309420).

Almost surely, 2^{72534963564489} is an apocalyptic number.

It is an amenable number.

72534963564489 is a deficient number, since it is larger than the sum of its proper divisors (29867617386231).

72534963564489 is a wasteful number, since it uses less digits than its factorization.

72534963564489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881240.

The product of its digits is 4702924800, while the sum is 75.

The spelling of 72534963564489 in words is "seventy-two trillion, five hundred thirty-four billion, nine hundred sixty-three million, five hundred sixty-four thousand, four hundred eighty-nine".