20715667443 has 24 divisors (see below), whose sum is σ = 30008169360. Its totient is φ = 13771028160.

The previous prime is 20715667429. The next prime is 20715667451. The reversal of 20715667443 is 34476651702.

It is not a de Polignac number, because 20715667443 - 2¹⁴ = 20715651059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20715667403) 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, 5851768 + ... + 5855306.

It is an arithmetic number, because the mean of its divisors is an integer number (1250340390).

Almost surely, 2^20715667443 is an apocalyptic number.

20715667443 is a deficient number, since it is larger than the sum of its proper divisors (9292501917).

20715667443 is a wasteful number, since it uses less digits than its factorization.

20715667443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219 (or 5216 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 20715667443 in words is "twenty billion, seven hundred fifteen million, six hundred sixty-seven thousand, four hundred forty-three".