20682963936 has 72 divisors (see below), whose sum is σ = 58831076304. Its totient is φ = 6892692480.

The previous prime is 20682963919. The next prime is 20682964013. The reversal of 20682963936 is 63936928602.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×20682963936² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2322885 + ... + 2331771.

It is an arithmetic number, because the mean of its divisors is an integer number (817098282).

Almost surely, 2^20682963936 is an apocalyptic number.

It is an amenable number.

20682963936 is an abundant number, since it is smaller than the sum of its proper divisors (38148112368).

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

20682963936 is a wasteful number, since it uses less digits than its factorization.

20682963936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16984 (or 16973 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 20682963936 in words is "twenty billion, six hundred eighty-two million, nine hundred sixty-three thousand, nine hundred thirty-six".