20634680312 has 24 divisors (see below), whose sum is σ = 38955676440. Its totient is φ = 10246533600.

The previous prime is 20634680303. The next prime is 20634680321. The reversal of 20634680312 is 21308643602.

It is an interprime number because it is at equal distance from previous prime (20634680303) and next prime (20634680321).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4990598 + ... + 4994730.

It is an arithmetic number, because the mean of its divisors is an integer number (1623153185).

Almost surely, 2^20634680312 is an apocalyptic number.

It is an amenable number.

20634680312 is a deficient number, since it is larger than the sum of its proper divisors (18320996128).

20634680312 is an frugal number, since it uses more digits than its factorization.

20634680312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 20634680312 in words is "twenty billion, six hundred thirty-four million, six hundred eighty thousand, three hundred twelve".