20368147091 has 2 divisors, whose sum is σ = 20368147092. Its totient is φ = 20368147090.

The previous prime is 20368147069. The next prime is 20368147141. The reversal of 20368147091 is 19074186302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20368147091 - 2¹⁰ = 20368146067 is a prime.

It is a super-2 number, since 2×20368147091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20368147001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184073545 + 10184073546.

It is an arithmetic number, because the mean of its divisors is an integer number (10184073546).

Almost surely, 2^20368147091 is an apocalyptic number.

20368147091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20368147091 is an equidigital number, since it uses as much as digits as its factorization.

20368147091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 20368147091 in words is "twenty billion, three hundred sixty-eight million, one hundred forty-seven thousand, ninety-one".