20967442836 has 48 divisors (see below), whose sum is σ = 50016945216. Its totient is φ = 6834541824.

The previous prime is 20967442817. The next prime is 20967442861. The reversal of 20967442836 is 63824476902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14970 + ... + 205326.

It is an arithmetic number, because the mean of its divisors is an integer number (1042019692).

Almost surely, 2^20967442836 is an apocalyptic number.

It is an amenable number.

20967442836 is an abundant number, since it is smaller than the sum of its proper divisors (29049502380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20967442836 is a wasteful number, since it uses less digits than its factorization.

20967442836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190568 (or 190566 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 20967442836 in words is "twenty billion, nine hundred sixty-seven million, four hundred forty-two thousand, eight hundred thirty-six".