20867099927 has 2 divisors, whose sum is σ = 20867099928. Its totient is φ = 20867099926.

The previous prime is 20867099893. The next prime is 20867099989. The reversal of 20867099927 is 72999076802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20867099927 - 2⁶ = 20867099863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20867090927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10433549963 + 10433549964.

It is an arithmetic number, because the mean of its divisors is an integer number (10433549964).

Almost surely, 2^20867099927 is an apocalyptic number.

20867099927 is a deficient number, since it is larger than the sum of its proper divisors (1).

20867099927 is an equidigital number, since it uses as much as digits as its factorization.

20867099927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 20867099927 in words is "twenty billion, eight hundred sixty-seven million, ninety-nine thousand, nine hundred twenty-seven".