21874633647812 has 48 divisors (see below), whose sum is σ = 41906079129600. Its totient is φ = 9908450489760.

The previous prime is 21874633647781. The next prime is 21874633647817.

21874633647812 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21874633647817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14431883 + ... + 15875405.

It is an arithmetic number, because the mean of its divisors is an integer number (873043315200).

Almost surely, 2^{21874633647812} is an apocalyptic number.

21874633647812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21874633647812 is a deficient number, since it is larger than the sum of its proper divisors (20031445481788).

21874633647812 is a wasteful number, since it uses less digits than its factorization.

21874633647812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444736 (or 1444734 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 62.

The spelling of 21874633647812 in words is "twenty-one trillion, eight hundred seventy-four billion, six hundred thirty-three million, six hundred forty-seven thousand, eight hundred twelve".