20636593040 has 240 divisors, whose sum is σ = 57708806400. Its totient is φ = 6839239680.

The previous prime is 20636593039. The next prime is 20636593051. The reversal of 20636593040 is 4039563602.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 20636592985 and 20636593003.

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, 14750261 + ... + 14751659.

It is an arithmetic number, because the mean of its divisors is an integer number (240453360).

Almost surely, 2^20636593040 is an apocalyptic number.

20636593040 is a gapful number since it is divisible by the number (20) 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 20636593040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28854403200).

20636593040 is an abundant number, since it is smaller than the sum of its proper divisors (37072213360).

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

20636593040 is a wasteful number, since it uses less digits than its factorization.

20636593040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 20636593040 in words is "twenty billion, six hundred thirty-six million, five hundred ninety-three thousand, forty".