20738669023 has 4 divisors (see below), whose sum is σ = 20779413480. Its totient is φ = 20697924568.

The previous prime is 20738669011. The next prime is 20738669033. The reversal of 20738669023 is 32096683702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20738669023 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 (20738669033) 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, 20371465 + ... + 20372482.

It is an arithmetic number, because the mean of its divisors is an integer number (5194853370).

Almost surely, 2^20738669023 is an apocalyptic number.

20738669023 is a deficient number, since it is larger than the sum of its proper divisors (40744457).

20738669023 is an equidigital number, since it uses as much as digits as its factorization.

20738669023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40744456.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 20738669023 in words is "twenty billion, seven hundred thirty-eight million, six hundred sixty-nine thousand, twenty-three".