21959110453 has 8 divisors (see below), whose sum is σ = 25097143680. Its totient is φ = 18821331600.

The previous prime is 21959110421. The next prime is 21959110457. The reversal of 21959110453 is 35401195912.

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 21959110453 - 2⁵ = 21959110421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21959110457) 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, 187503 + ... + 281203.

It is an arithmetic number, because the mean of its divisors is an integer number (3137142960).

Almost surely, 2^21959110453 is an apocalyptic number.

It is an amenable number.

21959110453 is a deficient number, since it is larger than the sum of its proper divisors (3138033227).

21959110453 is an equidigital number, since it uses as much as digits as its factorization.

21959110453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127187.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 21959110453 in words is "twenty-one billion, nine hundred fifty-nine million, one hundred ten thousand, four hundred fifty-three".