21374443203199 has 16 divisors (see below), whose sum is σ = 21891940567200. Its totient is φ = 20857881784320.

The previous prime is 21374443203101. The next prime is 21374443203263. The reversal of 21374443203199 is 99130234447312.

It is a de Polignac number, because none of the positive numbers 2^k-21374443203199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374443503199) 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, 240873159 + ... + 240961879.

It is an arithmetic number, because the mean of its divisors is an integer number (1368246285450).

Almost surely, 2^{21374443203199} is an apocalyptic number.

21374443203199 is a deficient number, since it is larger than the sum of its proper divisors (517497364001).

21374443203199 is a wasteful number, since it uses less digits than its factorization.

21374443203199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93930.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 21374443203199 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, one hundred ninety-nine".