21886312253 has 8 divisors (see below), whose sum is σ = 23573553696. Its totient is φ = 20199596400.

The previous prime is 21886312243. The next prime is 21886312271. The reversal of 21886312253 is 35221368812.

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

It is a cyclic number.

It is not a de Polignac number, because 21886312253 - 2⁴ = 21886312237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21886312253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21886312243) 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, 42683 + ... + 213528.

It is an arithmetic number, because the mean of its divisors is an integer number (2946694212).

Almost surely, 2^21886312253 is an apocalyptic number.

It is an amenable number.

21886312253 is a deficient number, since it is larger than the sum of its proper divisors (1687241443).

21886312253 is a wasteful number, since it uses less digits than its factorization.

21886312253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262795.

The product of its digits is 138240, while the sum is 41.

The spelling of 21886312253 in words is "twenty-one billion, eight hundred eighty-six million, three hundred twelve thousand, two hundred fifty-three".