72563306453 has 4 divisors (see below), whose sum is σ = 79159970688. Its totient is φ = 65966642220.

The previous prime is 72563306443. The next prime is 72563306477. The reversal of 72563306453 is 35460336527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72563306453 - 2⁴ = 72563306437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72563306423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298332101 + ... + 3298332122.

It is an arithmetic number, because the mean of its divisors is an integer number (19789992672).

Almost surely, 2^72563306453 is an apocalyptic number.

It is an amenable number.

72563306453 is a deficient number, since it is larger than the sum of its proper divisors (6596664235).

72563306453 is a wasteful number, since it uses less digits than its factorization.

72563306453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596664234.

The product of its (nonzero) digits is 1360800, while the sum is 44.

The spelling of 72563306453 in words is "seventy-two billion, five hundred sixty-three million, three hundred six thousand, four hundred fifty-three".