10821621623 has 8 divisors (see below), whose sum is σ = 10859888448. Its totient is φ = 10783378944.

The previous prime is 10821621611. The next prime is 10821621637. The reversal of 10821621623 is 32612612801.

10821621623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10821621623 - 2²⁸ = 10553186167 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 10821621623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821621653) 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, 1830290 + ... + 1836192.

It is an arithmetic number, because the mean of its divisors is an integer number (1357486056).

Almost surely, 2^10821621623 is an apocalyptic number.

10821621623 is a deficient number, since it is larger than the sum of its proper divisors (38266825).

10821621623 is an equidigital number, since it uses as much as digits as its factorization.

10821621623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 10821621623 in words is "ten billion, eight hundred twenty-one million, six hundred twenty-one thousand, six hundred twenty-three".