20936998584 has 192 divisors, whose sum is σ = 63147651840. Its totient is φ = 6475230720.

The previous prime is 20936998573. The next prime is 20936998591. The reversal of 20936998584 is 48589963902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2341947 + ... + 2350869.

It is an arithmetic number, because the mean of its divisors is an integer number (328894020).

Almost surely, 2^20936998584 is an apocalyptic number.

20936998584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20936998584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31573825920).

20936998584 is an abundant number, since it is smaller than the sum of its proper divisors (42210653256).

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

20936998584 is a wasteful number, since it uses less digits than its factorization.

20936998584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9032 (or 9016 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 20936998584 in words is "twenty billion, nine hundred thirty-six million, nine hundred ninety-eight thousand, five hundred eighty-four".