20744563703 has 4 divisors (see below), whose sum is σ = 20876694840. Its totient is φ = 20612432568.

The previous prime is 20744563699. The next prime is 20744563709. The reversal of 20744563703 is 30736544702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20744563703 - 2² = 20744563699 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 (20744563709) 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, 66065333 + ... + 66065646.

It is an arithmetic number, because the mean of its divisors is an integer number (5219173710).

Almost surely, 2^20744563703 is an apocalyptic number.

20744563703 is a deficient number, since it is larger than the sum of its proper divisors (132131137).

20744563703 is a wasteful number, since it uses less digits than its factorization.

20744563703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132131136.

The product of its (nonzero) digits is 423360, while the sum is 41.

The spelling of 20744563703 in words is "twenty billion, seven hundred forty-four million, five hundred sixty-three thousand, seven hundred three".