72313252020073 has 4 divisors (see below), whose sum is σ = 72314362086480. Its totient is φ = 72312141953668.

The previous prime is 72313252020067. The next prime is 72313252020143. The reversal of 72313252020073 is 37002025231327.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-72313252020073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72313252020473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554935483 + ... + 555065776.

It is an arithmetic number, because the mean of its divisors is an integer number (18078590521620).

Almost surely, 2^{72313252020073} is an apocalyptic number.

It is an amenable number.

72313252020073 is a deficient number, since it is larger than the sum of its proper divisors (1110066407).

72313252020073 is a wasteful number, since it uses less digits than its factorization.

72313252020073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110066406.

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 72313252020073 in words is "seventy-two trillion, three hundred thirteen billion, two hundred fifty-two million, twenty thousand, seventy-three".