21246776110553 has 8 divisors (see below), whose sum is σ = 24282082881408. Its totient is φ = 18211482599904.

The previous prime is 21246776110543. The next prime is 21246776110559. The reversal of 21246776110553 is 35501167764212.

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 21246776110553 - 2¹⁶ = 21246776045017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21246776110559) 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, 395300 + ... + 6530682.

It is an arithmetic number, because the mean of its divisors is an integer number (3035260360176).

Almost surely, 2^{21246776110553} is an apocalyptic number.

It is an amenable number.

21246776110553 is a deficient number, since it is larger than the sum of its proper divisors (3035306770855).

21246776110553 is an equidigital number, since it uses as much as digits as its factorization.

21246776110553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630103.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 21246776110553 in words is "twenty-one trillion, two hundred forty-six billion, seven hundred seventy-six million, one hundred ten thousand, five hundred fifty-three".