13121504355 has 16 divisors (see below), whose sum is σ = 21282003360. Its totient is φ = 6902270208.

The previous prime is 13121504353. The next prime is 13121504371. The reversal of 13121504355 is 55340512131.

It is not a de Polignac number, because 13121504355 - 2¹ = 13121504353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121504353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5990460 + ... + 5992649.

It is an arithmetic number, because the mean of its divisors is an integer number (1330125210).

Almost surely, 2^13121504355 is an apocalyptic number.

13121504355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13121504355 is a deficient number, since it is larger than the sum of its proper divisors (8160499005).

13121504355 is a wasteful number, since it uses less digits than its factorization.

13121504355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11983190.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 13121504355 in words is "thirteen billion, one hundred twenty-one million, five hundred four thousand, three hundred fifty-five".