13122505985 has 8 divisors (see below), whose sum is σ = 16082050176. Its totient is φ = 10274642800.

The previous prime is 13122505969. The next prime is 13122506011. The reversal of 13122505985 is 58950522131.

It is a happy number.

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

It is not a de Polignac number, because 13122505985 - 2⁴ = 13122505969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27919991 + ... + 27920460.

It is an arithmetic number, because the mean of its divisors is an integer number (2010256272).

Almost surely, 2^13122505985 is an apocalyptic number.

It is an amenable number.

13122505985 is a deficient number, since it is larger than the sum of its proper divisors (2959544191).

13122505985 is an equidigital number, since it uses as much as digits as its factorization.

13122505985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55840503.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 13122505985 in words is "thirteen billion, one hundred twenty-two million, five hundred five thousand, nine hundred eighty-five".