13661464131436 has 12 divisors (see below), whose sum is σ = 26080976978280. Its totient is φ = 6209756423360.

The previous prime is 13661464131409. The next prime is 13661464131451. The reversal of 13661464131436 is 63413146416631.

It is a self number, because there is not a number n which added to its sum of digits gives 13661464131436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155243910541 + ... + 155243910628.

It is an arithmetic number, because the mean of its divisors is an integer number (2173414748190).

Almost surely, 2^{13661464131436} is an apocalyptic number.

It is an amenable number.

13661464131436 is a deficient number, since it is larger than the sum of its proper divisors (12419512846844).

13661464131436 is a wasteful number, since it uses less digits than its factorization.

13661464131436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310487821184 (or 310487821182 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 49.

The spelling of 13661464131436 in words is "thirteen trillion, six hundred sixty-one billion, four hundred sixty-four million, one hundred thirty-one thousand, four hundred thirty-six".