20307149663 has 2 divisors, whose sum is σ = 20307149664. Its totient is φ = 20307149662.

The previous prime is 20307149659. The next prime is 20307149677. The reversal of 20307149663 is 36694170302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20307149663 - 2² = 20307149659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20307149663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20307149623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153574831 + 10153574832.

It is an arithmetic number, because the mean of its divisors is an integer number (10153574832).

Almost surely, 2^20307149663 is an apocalyptic number.

20307149663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20307149663 is an equidigital number, since it uses as much as digits as its factorization.

20307149663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 20307149663 in words is "twenty billion, three hundred seven million, one hundred forty-nine thousand, six hundred sixty-three".