6623023121891 has 8 divisors (see below), whose sum is σ = 7229154788400. Its totient is φ = 6017564564640.

The previous prime is 6623023121881. The next prime is 6623023121941. The reversal of 6623023121891 is 1981213203266.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6623023121891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6623023121881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168256736 + ... + 168296093.

It is an arithmetic number, because the mean of its divisors is an integer number (903644348550).

Almost surely, 2^{6623023121891} is an apocalyptic number.

6623023121891 is a deficient number, since it is larger than the sum of its proper divisors (606131666509).

6623023121891 is a wasteful number, since it uses less digits than its factorization.

6623023121891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336554629.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 6623023121891 in words is "six trillion, six hundred twenty-three billion, twenty-three million, one hundred twenty-one thousand, eight hundred ninety-one".