21675226307 has 4 divisors (see below), whose sum is σ = 24771687216. Its totient is φ = 18578765400.

The previous prime is 21675226273. The next prime is 21675226327. The reversal of 21675226307 is 70362257612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21675226307 - 2²² = 21671032003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21675226327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1548230444 + ... + 1548230457.

It is an arithmetic number, because the mean of its divisors is an integer number (6192921804).

Almost surely, 2^21675226307 is an apocalyptic number.

21675226307 is a deficient number, since it is larger than the sum of its proper divisors (3096460909).

21675226307 is an equidigital number, since it uses as much as digits as its factorization.

21675226307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096460908.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 21675226307 in words is "twenty-one billion, six hundred seventy-five million, two hundred twenty-six thousand, three hundred seven".