26623630121 has 6 divisors (see below), whose sum is σ = 29263990266. Its totient is φ = 24203300000.

The previous prime is 26623630067. The next prime is 26623630139. The reversal of 26623630121 is 12103632662.

It can be written as a sum of positive squares in only one way, i.e., 26507421721 + 116208400 = 162811^2 + 10780^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26623630121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26623630321) 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 5 ways as a sum of consecutive naturals, for example, 110014880 + ... + 110015121.

It is an arithmetic number, because the mean of its divisors is an integer number (4877331711).

Almost surely, 2^26623630121 is an apocalyptic number.

It is an amenable number.

26623630121 is a deficient number, since it is larger than the sum of its proper divisors (2640360145).

26623630121 is a wasteful number, since it uses less digits than its factorization.

26623630121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220030023 (or 220030012 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 26623630121 in words is "twenty-six billion, six hundred twenty-three million, six hundred thirty thousand, one hundred twenty-one".