21038410286 has 8 divisors (see below), whose sum is σ = 31836886704. Its totient is φ = 10426114720.

The previous prime is 21038410279. The next prime is 21038410301. The reversal of 21038410286 is 68201483012.

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

It is a super-2 number, since 2×21038410286² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46544930 + ... + 46545381.

It is an arithmetic number, because the mean of its divisors is an integer number (3979610838).

Almost surely, 2^21038410286 is an apocalyptic number.

21038410286 is a deficient number, since it is larger than the sum of its proper divisors (10798476418).

21038410286 is a wasteful number, since it uses less digits than its factorization.

21038410286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93090426.

The product of its (nonzero) digits is 18432, while the sum is 35.

Adding to 21038410286 its reverse (68201483012), we get a palindrome (89239893298).

The spelling of 21038410286 in words is "twenty-one billion, thirty-eight million, four hundred ten thousand, two hundred eighty-six".