20311092844 has 12 divisors (see below), whose sum is σ = 40622185744. Its totient is φ = 8704754064.

The previous prime is 20311092821. The next prime is 20311092847. The reversal of 20311092844 is 44829011302.

20311092844 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20311092847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362698059 + ... + 362698114.

Almost surely, 2^20311092844 is an apocalyptic number.

It is an amenable number.

20311092844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20311092844 is a wasteful number, since it uses less digits than its factorization.

20311092844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725396184 (or 725396182 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 20311092844 in words is "twenty billion, three hundred eleven million, ninety-two thousand, eight hundred forty-four".