20008426631 has 2 divisors, whose sum is σ = 20008426632. Its totient is φ = 20008426630.

The previous prime is 20008426609. The next prime is 20008426649. The reversal of 20008426631 is 13662480002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20008426631 - 2⁶ = 20008426567 is a prime.

It is a super-2 number, since 2×20008426631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20008126631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004213315 + 10004213316.

It is an arithmetic number, because the mean of its divisors is an integer number (10004213316).

Almost surely, 2^20008426631 is an apocalyptic number.

20008426631 is a deficient number, since it is larger than the sum of its proper divisors (1).

20008426631 is an equidigital number, since it uses as much as digits as its factorization.

20008426631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 20008426631 in words is "twenty billion, eight million, four hundred twenty-six thousand, six hundred thirty-one".