20331996907 has 2 divisors, whose sum is σ = 20331996908. Its totient is φ = 20331996906.

The previous prime is 20331996869. The next prime is 20331996911. The reversal of 20331996907 is 70969913302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331996907 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331993907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165998453 + 10165998454.

It is an arithmetic number, because the mean of its divisors is an integer number (10165998454).

Almost surely, 2^20331996907 is an apocalyptic number.

20331996907 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331996907 is an equidigital number, since it uses as much as digits as its factorization.

20331996907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 49.

The spelling of 20331996907 in words is "twenty billion, three hundred thirty-one million, nine hundred ninety-six thousand, nine hundred seven".