21874059259 has 8 divisors (see below), whose sum is σ = 23578246832. Its totient is φ = 20172952800.

The previous prime is 21874059257. The next prime is 21874059323. The reversal of 21874059259 is 95295047812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21874059259 - 2¹ = 21874059257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21874059257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755517 + ... + 783934.

It is an arithmetic number, because the mean of its divisors is an integer number (2947280854).

Almost surely, 2^21874059259 is an apocalyptic number.

21874059259 is a deficient number, since it is larger than the sum of its proper divisors (1704187573).

21874059259 is a wasteful number, since it uses less digits than its factorization.

21874059259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540557.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 21874059259 in words is "twenty-one billion, eight hundred seventy-four million, fifty-nine thousand, two hundred fifty-nine".