20088663971 has 4 divisors (see below), whose sum is σ = 20109439152. Its totient is φ = 20067888792.

The previous prime is 20088663953. The next prime is 20088663997. The reversal of 20088663971 is 17936688002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17936688002 = 2 ⋅8968344001.

It is a cyclic number.

It is not a de Polignac number, because 20088663971 - 2²² = 20084469667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20088663901) 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, 10386140 + ... + 10388073.

It is an arithmetic number, because the mean of its divisors is an integer number (5027359788).

Almost surely, 2^20088663971 is an apocalyptic number.

20088663971 is a deficient number, since it is larger than the sum of its proper divisors (20775181).

20088663971 is an equidigital number, since it uses as much as digits as its factorization.

20088663971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20775180.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 20088663971 in words is "twenty billion, eighty-eight million, six hundred sixty-three thousand, nine hundred seventy-one".