72645001133 has 8 divisors (see below), whose sum is σ = 76343459808. Its totient is φ = 69037862544.

The previous prime is 72645001007. The next prime is 72645001139. The reversal of 72645001133 is 33110054627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72645001133 - 2¹² = 72644997037 is a prime.

It is a super-2 number, since 2×72645001133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72645001133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72645001139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22828391 + ... + 22831572.

It is an arithmetic number, because the mean of its divisors is an integer number (9542932476).

Almost surely, 2^72645001133 is an apocalyptic number.

It is an amenable number.

72645001133 is a deficient number, since it is larger than the sum of its proper divisors (3698458675).

72645001133 is a wasteful number, since it uses less digits than its factorization.

72645001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45660043.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 72645001133 in words is "seventy-two billion, six hundred forty-five million, one thousand, one hundred thirty-three".