20958745184 has 24 divisors (see below), whose sum is σ = 44436571200. Its totient is φ = 9673266816.

The previous prime is 20958745183. The next prime is 20958745211. The reversal of 20958745184 is 48154785902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20958745183) 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, 25190384 + ... + 25191215.

It is an arithmetic number, because the mean of its divisors is an integer number (1851523800).

Almost surely, 2^20958745184 is an apocalyptic number.

It is an amenable number.

20958745184 is an abundant number, since it is smaller than the sum of its proper divisors (23477826016).

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

20958745184 is a wasteful number, since it uses less digits than its factorization.

20958745184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50381622 (or 50381614 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 20958745184 in words is "twenty billion, nine hundred fifty-eight million, seven hundred forty-five thousand, one hundred eighty-four".