20349694427 has 2 divisors, whose sum is σ = 20349694428. Its totient is φ = 20349694426.

The previous prime is 20349694397. The next prime is 20349694457. The reversal of 20349694427 is 72449694302.

It is a balanced prime because it is at equal distance from previous prime (20349694397) and next prime (20349694457).

It is a cyclic number.

It is not a de Polignac number, because 20349694427 - 2⁶ = 20349694363 is a prime.

It is a super-2 number, since 2×20349694427² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20349694457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10174847213 + 10174847214.

It is an arithmetic number, because the mean of its divisors is an integer number (10174847214).

Almost surely, 2^20349694427 is an apocalyptic number.

20349694427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20349694427 is an equidigital number, since it uses as much as digits as its factorization.

20349694427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 20349694427 in words is "twenty billion, three hundred forty-nine million, six hundred ninety-four thousand, four hundred twenty-seven".