21882065670 has 48 divisors (see below), whose sum is σ = 56938152960. Its totient is φ = 5830624512.

The previous prime is 21882065641. The next prime is 21882065693. The reversal of 21882065670 is 7656028812.

21882065670 is a `hidden beast` number, since 2 + 1 + 8 + 82 + 0 + 6 + 567 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20062 + ... + 210158.

It is an arithmetic number, because the mean of its divisors is an integer number (1186211520).

Almost surely, 2^21882065670 is an apocalyptic number.

21882065670 is an abundant number, since it is smaller than the sum of its proper divisors (35056087290).

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

21882065670 is a wasteful number, since it uses less digits than its factorization.

21882065670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191389 (or 191386 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 21882065670 in words is "twenty-one billion, eight hundred eighty-two million, sixty-five thousand, six hundred seventy".