21683334036 has 48 divisors (see below), whose sum is σ = 62270090624. Its totient is φ = 5718681216.

The previous prime is 21683333993. The next prime is 21683334037. The reversal of 21683334036 is 63043338612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 21683333985 and 21683334003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21683334037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9927175 + ... + 9929358.

Almost surely, 2^21683334036 is an apocalyptic number.

21683334036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21683334036 is an abundant number, since it is smaller than the sum of its proper divisors (40586756588).

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

21683334036 is a wasteful number, since it uses less digits than its factorization.

21683334036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19856560 (or 19856558 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 21683334036 in words is "twenty-one billion, six hundred eighty-three million, three hundred thirty-four thousand, thirty-six".