21374443203264 has 84 divisors (see below), whose sum is σ = 61266962302000. Its totient is φ = 7124700418560.

The previous prime is 21374443203263. The next prime is 21374443203301. The reversal of 21374443203264 is 46230234447312.

21374443203264 is a `hidden beast` number, since 21 + 3 + 7 + 4 + 44 + 320 + 3 + 264 = 666.

It is not an unprimeable number, because it can be changed into a prime (21374443203263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40634094 + ... + 41156754.

Almost surely, 2^{21374443203264} is an apocalyptic number.

21374443203264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21374443203264 is an abundant number, since it is smaller than the sum of its proper divisors (39892519098736).

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

21374443203264 is a wasteful number, since it uses less digits than its factorization.

21374443203264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593678 (or 593665 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 45.

The spelling of 21374443203264 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, two hundred sixty-four".