21350152630 has 16 divisors (see below), whose sum is σ = 39367599264. Its totient is φ = 8331766720.

The previous prime is 21350152613. The next prime is 21350152679. The reversal of 21350152630 is 3625105312.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26036362 + ... + 26037181.

It is an arithmetic number, because the mean of its divisors is an integer number (2460474954).

Almost surely, 2^21350152630 is an apocalyptic number.

21350152630 is a deficient number, since it is larger than the sum of its proper divisors (18017446634).

21350152630 is a wasteful number, since it uses less digits than its factorization.

21350152630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52073591.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 21350152630 its reverse (3625105312), we get a palindrome (24975257942).

The spelling of 21350152630 in words is "twenty-one billion, three hundred fifty million, one hundred fifty-two thousand, six hundred thirty".