20027083091 has 2 divisors, whose sum is σ = 20027083092. Its totient is φ = 20027083090.

The previous prime is 20027083067. The next prime is 20027083127. The reversal of 20027083091 is 19038072002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027083091 is a prime.

It is a super-2 number, since 2×20027083091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20027083991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013541545 + 10013541546.

It is an arithmetic number, because the mean of its divisors is an integer number (10013541546).

Almost surely, 2^20027083091 is an apocalyptic number.

20027083091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027083091 is an equidigital number, since it uses as much as digits as its factorization.

20027083091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 20027083091 in words is "twenty billion, twenty-seven million, eighty-three thousand, ninety-one".