20027503291 has 2 divisors, whose sum is σ = 20027503292. Its totient is φ = 20027503290.

The previous prime is 20027503217. The next prime is 20027503319. The reversal of 20027503291 is 19230572002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027503291 is a prime.

It is a super-2 number, since 2×20027503291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20027503201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013751645 + 10013751646.

It is an arithmetic number, because the mean of its divisors is an integer number (10013751646).

Almost surely, 2^20027503291 is an apocalyptic number.

20027503291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027503291 is an equidigital number, since it uses as much as digits as its factorization.

20027503291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 20027503291 in words is "twenty billion, twenty-seven million, five hundred three thousand, two hundred ninety-one".