21486983764365 has 64 divisors (see below), whose sum is σ = 45953783193600. Its totient is φ = 9305641081152.

The previous prime is 21486983764333. The next prime is 21486983764427. The reversal of 21486983764365 is 56346738968412.

It is a happy number.

21486983764365 is a `hidden beast` number, since 2 + 1 + 48 + 6 + 9 + 83 + 76 + 436 + 5 = 666.

It is not a de Polignac number, because 21486983764365 - 2⁵ = 21486983764333 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21486983764293 and 21486983764302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 598338597 + ... + 598374506.

It is an arithmetic number, because the mean of its divisors is an integer number (718027862400).

Almost surely, 2^{21486983764365} is an apocalyptic number.

It is an amenable number.

21486983764365 is an abundant number, since it is smaller than the sum of its proper divisors (24466799429235).

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

21486983764365 is a wasteful number, since it uses less digits than its factorization.

21486983764365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196713143 (or 1196713137 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 72.

The spelling of 21486983764365 in words is "twenty-one trillion, four hundred eighty-six billion, nine hundred eighty-three million, seven hundred sixty-four thousand, three hundred sixty-five".