21182672681046 has 24 divisors (see below), whose sum is σ = 46411473855240. Its totient is φ = 6981555040416.

The previous prime is 21182672681033. The next prime is 21182672681153. The reversal of 21182672681046 is 64018627628112.

21182672681046 is a `hidden beast` number, since 2 + 1 + 18 + 267 + 268 + 104 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21182672680983 and 21182672681001.

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, 6611319460 + ... + 6611322663.

It is an arithmetic number, because the mean of its divisors is an integer number (1933811410635).

Almost surely, 2^{21182672681046} is an apocalyptic number.

21182672681046 is an abundant number, since it is smaller than the sum of its proper divisors (25228801174194).

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

21182672681046 is a wasteful number, since it uses less digits than its factorization.

21182672681046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222642220 (or 13222642217 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 21182672681046 in words is "twenty-one trillion, one hundred eighty-two billion, six hundred seventy-two million, six hundred eighty-one thousand, forty-six".