20446869396 has 48 divisors (see below), whose sum is σ = 48880298880. Its totient is φ = 6650327040.

The previous prime is 20446869389. The next prime is 20446869397. The reversal of 20446869396 is 69396864402.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446869397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41061 + ... + 206348.

It is an arithmetic number, because the mean of its divisors is an integer number (1018339560).

Almost surely, 2^20446869396 is an apocalyptic number.

It is an amenable number.

20446869396 is an abundant number, since it is smaller than the sum of its proper divisors (28433429484).

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

20446869396 is a wasteful number, since it uses less digits than its factorization.

20446869396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247584 (or 247582 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 20446869396 in words is "twenty billion, four hundred forty-six million, eight hundred sixty-nine thousand, three hundred ninety-six".