21352002316 has 24 divisors (see below), whose sum is σ = 37560912480. Its totient is φ = 10620451200.

The previous prime is 21352002311. The next prime is 21352002361. The reversal of 21352002316 is 61320025312.

It is not an unprimeable number, because it can be changed into a prime (21352002311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616336 + ... + 650056.

It is an arithmetic number, because the mean of its divisors is an integer number (1565038020).

Almost surely, 2^21352002316 is an apocalyptic number.

It is an amenable number.

21352002316 is a deficient number, since it is larger than the sum of its proper divisors (16208910164).

21352002316 is a wasteful number, since it uses less digits than its factorization.

21352002316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34545 (or 34543 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21352002316 its reverse (61320025312), we get a palindrome (82672027628).

The spelling of 21352002316 in words is "twenty-one billion, three hundred fifty-two million, two thousand, three hundred sixteen".