21375962834 has 8 divisors (see below), whose sum is σ = 32064664320. Its totient is φ = 10687741396.

The previous prime is 21375962831. The next prime is 21375962849. The reversal of 21375962834 is 43826957312.

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

It is not an unprimeable number, because it can be changed into a prime (21375962831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27647 + ... + 208605.

It is an arithmetic number, because the mean of its divisors is an integer number (4008083040).

Almost surely, 2^21375962834 is an apocalyptic number.

21375962834 is a deficient number, since it is larger than the sum of its proper divisors (10688701486).

21375962834 is a wasteful number, since it uses less digits than its factorization.

21375962834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240024.

The product of its digits is 2177280, while the sum is 50.

The spelling of 21375962834 in words is "twenty-one billion, three hundred seventy-five million, nine hundred sixty-two thousand, eight hundred thirty-four".