21847666674812 has 24 divisors (see below), whose sum is σ = 42331706941440. Its totient is φ = 9782537315760.

The previous prime is 21847666674707. The next prime is 21847666674829.

21847666674812 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3705503612 + ... + 3705509507.

It is an arithmetic number, because the mean of its divisors is an integer number (1763821122560).

Almost surely, 2^{21847666674812} is an apocalyptic number.

21847666674812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21847666674812 is a deficient number, since it is larger than the sum of its proper divisors (20484040266628).

21847666674812 is a wasteful number, since it uses less digits than its factorization.

21847666674812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411013201 (or 7411013199 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 68.

The spelling of 21847666674812 in words is "twenty-one trillion, eight hundred forty-seven billion, six hundred sixty-six million, six hundred seventy-four thousand, eight hundred twelve".