13436981609476 has 24 divisors (see below), whose sum is σ = 23786277107544. Its totient is φ = 6641119468800.

The previous prime is 13436981609411. The next prime is 13436981609479. The reversal of 13436981609476 is 67490618963431.

It can be written as a sum of positive squares in 4 ways, for example, as 7102107076 + 13429879502400 = 84274^2 + 3664680^2 .

It is not an unprimeable number, because it can be changed into a prime (13436981609479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26881105 + ... + 27376408.

It is an arithmetic number, because the mean of its divisors is an integer number (991094879481).

Almost surely, 2^{13436981609476} is an apocalyptic number.

It is an amenable number.

13436981609476 is a deficient number, since it is larger than the sum of its proper divisors (10349295498068).

13436981609476 is a wasteful number, since it uses less digits than its factorization.

13436981609476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54258231 (or 54258229 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 13436981609476 in words is "thirteen trillion, four hundred thirty-six billion, nine hundred eighty-one million, six hundred nine thousand, four hundred seventy-six".