13235121115451 has 32 divisors (see below), whose sum is σ = 14496993916416. Its totient is φ = 12028704768000.

The previous prime is 13235121115409. The next prime is 13235121115493. The reversal of 13235121115451 is 15451112153231.

It is an interprime number because it is at equal distance from previous prime (13235121115409) and next prime (13235121115493).

It is a cyclic number.

It is not a de Polignac number, because 13235121115451 - 2¹⁸ = 13235120853307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13235121115351) 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 31 ways as a sum of consecutive naturals, for example, 1345985231 + ... + 1345995063.

It is an arithmetic number, because the mean of its divisors is an integer number (453031059888).

Almost surely, 2^{13235121115451} is an apocalyptic number.

13235121115451 is a deficient number, since it is larger than the sum of its proper divisors (1261872800965).

13235121115451 is a wasteful number, since it uses less digits than its factorization.

13235121115451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15143.

The product of its digits is 18000, while the sum is 35.

Adding to 13235121115451 its reverse (15451112153231), we get a palindrome (28686233268682).

The spelling of 13235121115451 in words is "thirteen trillion, two hundred thirty-five billion, one hundred twenty-one million, one hundred fifteen thousand, four hundred fifty-one".