20374450752643 has 8 divisors (see below), whose sum is σ = 23096543363600. Its totient is φ = 17817333451488.

The previous prime is 20374450752637. The next prime is 20374450752703. The reversal of 20374450752643 is 34625705447302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20374450752643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20374450755643) 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, 41243827188 + ... + 41243827681.

It is an arithmetic number, because the mean of its divisors is an integer number (2887067920450).

Almost surely, 2^{20374450752643} is an apocalyptic number.

20374450752643 is a deficient number, since it is larger than the sum of its proper divisors (2722092610957).

20374450752643 is a wasteful number, since it uses less digits than its factorization.

20374450752643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82487654901.

The product of its (nonzero) digits is 16934400, while the sum is 52.

The spelling of 20374450752643 in words is "twenty trillion, three hundred seventy-four billion, four hundred fifty million, seven hundred fifty-two thousand, six hundred forty-three".