20988298185844 has 48 divisors (see below), whose sum is σ = 40840670525760. Its totient is φ = 9356443799040.

The previous prime is 20988298185781. The next prime is 20988298185851. The reversal of 20988298185844 is 44858189288902.

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, 4148572 + ... + 7693324.

It is an arithmetic number, because the mean of its divisors is an integer number (850847302620).

Almost surely, 2^{20988298185844} is an apocalyptic number.

It is an amenable number.

20988298185844 is a deficient number, since it is larger than the sum of its proper divisors (19852372339916).

20988298185844 is a wasteful number, since it uses less digits than its factorization.

20988298185844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547360 (or 3547358 counting only the distinct ones).

The product of its (nonzero) digits is 849346560, while the sum is 76.

The spelling of 20988298185844 in words is "twenty trillion, nine hundred eighty-eight billion, two hundred ninety-eight million, one hundred eighty-five thousand, eight hundred forty-four".