20008252091 has 2 divisors, whose sum is σ = 20008252092. Its totient is φ = 20008252090.

The previous prime is 20008252073. The next prime is 20008252129. The reversal of 20008252091 is 19025280002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20008252091 is a prime.

It is not a weakly prime, because it can be changed into another prime (20008252021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004126045 + 10004126046.

It is an arithmetic number, because the mean of its divisors is an integer number (10004126046).

Almost surely, 2^20008252091 is an apocalyptic number.

20008252091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20008252091 is an equidigital number, since it uses as much as digits as its factorization.

20008252091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 20008252091 in words is "twenty billion, eight million, two hundred fifty-two thousand, ninety-one".