21849671940144 has 80 divisors (see below), whose sum is σ = 58900027847424. Its totient is φ = 6966454176000.

The previous prime is 21849671940143. The next prime is 21849671940181. The reversal of 21849671940144 is 44104917694812.

It is not an unprimeable number, because it can be changed into a prime (21849671940143) 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, 101969919 + ... + 102183969.

Almost surely, 2^{21849671940144} is an apocalyptic number.

21849671940144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21849671940144 is an abundant number, since it is smaller than the sum of its proper divisors (37050355907280).

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

21849671940144 is a wasteful number, since it uses less digits than its factorization.

21849671940144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306546 (or 306540 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 21849671940144 in words is "twenty-one trillion, eight hundred forty-nine billion, six hundred seventy-one million, nine hundred forty thousand, one hundred forty-four".