20274122867 has 2 divisors, whose sum is σ = 20274122868. Its totient is φ = 20274122866.

The previous prime is 20274122857. The next prime is 20274122887. The reversal of 20274122867 is 76822147202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20274122867 - 2¹² = 20274118771 is a prime.

It is a super-2 number, since 2×20274122867² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20274122857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137061433 + 10137061434.

It is an arithmetic number, because the mean of its divisors is an integer number (10137061434).

Almost surely, 2^20274122867 is an apocalyptic number.

20274122867 is a deficient number, since it is larger than the sum of its proper divisors (1).

20274122867 is an equidigital number, since it uses as much as digits as its factorization.

20274122867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 20274122867 in words is "twenty billion, two hundred seventy-four million, one hundred twenty-two thousand, eight hundred sixty-seven".