20298731966 has 24 divisors (see below), whose sum is σ = 32385025080. Its totient is φ = 9515895552.

The previous prime is 20298731963. The next prime is 20298731993. The reversal of 20298731966 is 66913789202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20298731963) 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 in 11 ways as a sum of consecutive naturals, for example, 329156 + ... + 385928.

It is an arithmetic number, because the mean of its divisors is an integer number (1349376045).

Almost surely, 2^20298731966 is an apocalyptic number.

20298731966 is a deficient number, since it is larger than the sum of its proper divisors (12086293114).

20298731966 is an equidigital number, since it uses as much as digits as its factorization.

20298731966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56988 (or 56891 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 20298731966 in words is "twenty billion, two hundred ninety-eight million, seven hundred thirty-one thousand, nine hundred sixty-six".