21325967763 has 8 divisors (see below), whose sum is σ = 28456451328. Its totient is φ = 14206398024.

The previous prime is 21325967743. The next prime is 21325967893. The reversal of 21325967763 is 36776952312.

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

It is a de Polignac number, because none of the positive numbers 2^k-21325967763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21325967743) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2723895 + ... + 2731712.

It is an arithmetic number, because the mean of its divisors is an integer number (3557056416).

Almost surely, 2^21325967763 is an apocalyptic number.

21325967763 is a deficient number, since it is larger than the sum of its proper divisors (7130483565).

21325967763 is a wasteful number, since it uses less digits than its factorization.

21325967763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456913.

The product of its digits is 2857680, while the sum is 51.

The spelling of 21325967763 in words is "twenty-one billion, three hundred twenty-five million, nine hundred sixty-seven thousand, seven hundred sixty-three".