21836886700 has 36 divisors (see below), whose sum is σ = 48914633152. Its totient is φ = 8452987200.

The previous prime is 21836886691. The next prime is 21836886707. The reversal of 21836886700 is 768863812.

It is not an unprimeable number, because it can be changed into a prime (21836886707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3518979 + ... + 3525178.

Almost surely, 2^21836886700 is an apocalyptic number.

21836886700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21836886700 is an abundant number, since it is smaller than the sum of its proper divisors (27077746452).

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

21836886700 is a wasteful number, since it uses less digits than its factorization.

21836886700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044202 (or 7044195 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 21836886700 in words is "twenty-one billion, eight hundred thirty-six million, eight hundred eighty-six thousand, seven hundred".