21874238626 has 8 divisors (see below), whose sum is σ = 32812508160. Its totient is φ = 10936735908.

The previous prime is 21874238621. The next prime is 21874238627. The reversal of 21874238626 is 62683247812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21874238626.

It is not an unprimeable number, because it can be changed into a prime (21874238621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114106 + ... + 238261.

It is an arithmetic number, because the mean of its divisors is an integer number (4101563520).

Almost surely, 2^21874238626 is an apocalyptic number.

21874238626 is a deficient number, since it is larger than the sum of its proper divisors (10938269534).

21874238626 is a wasteful number, since it uses less digits than its factorization.

21874238626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383408.

The product of its digits is 1548288, while the sum is 49.

The spelling of 21874238626 in words is "twenty-one billion, eight hundred seventy-four million, two hundred thirty-eight thousand, six hundred twenty-six".