20139892699 has 2 divisors, whose sum is σ = 20139892700. Its totient is φ = 20139892698.

The previous prime is 20139892697. The next prime is 20139892733. The reversal of 20139892699 is 99629893102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20139892699 - 2¹ = 20139892697 is a prime.

Together with 20139892697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20139892697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10069946349 + 10069946350.

It is an arithmetic number, because the mean of its divisors is an integer number (10069946350).

Almost surely, 2^20139892699 is an apocalyptic number.

20139892699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20139892699 is an equidigital number, since it uses as much as digits as its factorization.

20139892699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 20139892699 in words is "twenty billion, one hundred thirty-nine million, eight hundred ninety-two thousand, six hundred ninety-nine".