21150232602 has 8 divisors (see below), whose sum is σ = 42300465216. Its totient is φ = 7050077532.

The previous prime is 21150232591. The next prime is 21150232651. The reversal of 21150232602 is 20623205112.

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

21150232602 is an admirable number.

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, 1762519378 + ... + 1762519389.

It is an arithmetic number, because the mean of its divisors is an integer number (5287558152).

Almost surely, 2^21150232602 is an apocalyptic number.

21150232602 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21150232602 is a wasteful number, since it uses less digits than its factorization.

21150232602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525038772.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21150232602 its reverse (20623205112), we get a palindrome (41773437714).

The spelling of 21150232602 in words is "twenty-one billion, one hundred fifty million, two hundred thirty-two thousand, six hundred two".