13121356045 has 32 divisors (see below), whose sum is σ = 18688462848. Its totient is φ = 8657022528.

The previous prime is 13121356033. The next prime is 13121356051. The reversal of 13121356045 is 54065312131.

It is not a de Polignac number, because 13121356045 - 2¹¹ = 13121353997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121355998 and 13121356016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35772 + ... + 165898.

It is an arithmetic number, because the mean of its divisors is an integer number (584014464).

Almost surely, 2^13121356045 is an apocalyptic number.

It is an amenable number.

13121356045 is a deficient number, since it is larger than the sum of its proper divisors (5567106803).

13121356045 is a wasteful number, since it uses less digits than its factorization.

13121356045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130249.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13121356045 its reverse (54065312131), we get a palindrome (67186668176).

The spelling of 13121356045 in words is "thirteen billion, one hundred twenty-one million, three hundred fifty-six thousand, forty-five".