21095406682 has 8 divisors (see below), whose sum is σ = 36163554336. Its totient is φ = 9040888572.

The previous prime is 21095406667. The next prime is 21095406781. The reversal of 21095406682 is 28660459012.

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

It is an unprimeable number.

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, 753407368 + ... + 753407395.

It is an arithmetic number, because the mean of its divisors is an integer number (4520444292).

Almost surely, 2^21095406682 is an apocalyptic number.

21095406682 is a deficient number, since it is larger than the sum of its proper divisors (15068147654).

21095406682 is a wasteful number, since it uses less digits than its factorization.

21095406682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506814772.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 21095406682 in words is "twenty-one billion, ninety-five million, four hundred six thousand, six hundred eighty-two".