20943245045 has 24 divisors (see below), whose sum is σ = 26911033440. Its totient is φ = 15603498720.

The previous prime is 20943245041. The next prime is 20943245053. The reversal of 20943245045 is 54054234902.

It is not a de Polignac number, because 20943245045 - 2² = 20943245041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20943245041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299030 + ... + 362360.

It is an arithmetic number, because the mean of its divisors is an integer number (1121293060).

Almost surely, 2^20943245045 is an apocalyptic number.

It is an amenable number.

20943245045 is a deficient number, since it is larger than the sum of its proper divisors (5967788395).

20943245045 is an equidigital number, since it uses as much as digits as its factorization.

20943245045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63473 (or 63414 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 20943245045 its reverse (54054234902), we get a palindrome (74997479947).

The spelling of 20943245045 in words is "twenty billion, nine hundred forty-three million, two hundred forty-five thousand, forty-five".