20372326453617 has 16 divisors (see below), whose sum is σ = 27202044255360. Its totient is φ = 13562083850112.

The previous prime is 20372326453607. The next prime is 20372326453637. The reversal of 20372326453617 is 71635462327302.

It is not a de Polignac number, because 20372326453617 - 2⁸ = 20372326453361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20372326453617.

It is not an unprimeable number, because it can be changed into a prime (20372326453607) 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, 19868508 + ... + 20868690.

It is an arithmetic number, because the mean of its divisors is an integer number (1700127765960).

Almost surely, 2^{20372326453617} is an apocalyptic number.

It is an amenable number.

20372326453617 is a deficient number, since it is larger than the sum of its proper divisors (6829717801743).

20372326453617 is a wasteful number, since it uses less digits than its factorization.

20372326453617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009912.

The product of its (nonzero) digits is 7620480, while the sum is 51.

The spelling of 20372326453617 in words is "twenty trillion, three hundred seventy-two billion, three hundred twenty-six million, four hundred fifty-three thousand, six hundred seventeen".