21352625312 has 12 divisors (see below), whose sum is σ = 42037981146. Its totient is φ = 10676312640.

The previous prime is 21352625293. The next prime is 21352625389.

21352625312 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 21328849936 + 23775376 = 146044^2 + 4876^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 667269541 = 21352625312 / (2 + 1 + 3 + 5 + 2 + 6 + 2 + 5 + 3 + 1 + 2).

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 as a sum of consecutive naturals, namely, 333634739 + ... + 333634802.

Almost surely, 2^21352625312 is an apocalyptic number.

It is an amenable number.

21352625312 is a deficient number, since it is larger than the sum of its proper divisors (20685355834).

21352625312 is an equidigital number, since it uses as much as digits as its factorization.

21352625312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667269551 (or 667269543 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The spelling of 21352625312 in words is "twenty-one billion, three hundred fifty-two million, six hundred twenty-five thousand, three hundred twelve".