13420899767161 has 4 divisors (see below), whose sum is σ = 13423186516900. Its totient is φ = 13418613017424.

The previous prime is 13420899767159. The next prime is 13420899767183. The reversal of 13420899767161 is 16176799802431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4299895757161 + 9121004010000 = 2073619^2 + 3020100^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420899767161 - 2¹ = 13420899767159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13420899767093 and 13420899767102.

It is not an unprimeable number, because it can be changed into a prime (13420899747161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143366066 + ... + 1143377803.

It is an arithmetic number, because the mean of its divisors is an integer number (3355796629225).

Almost surely, 2^{13420899767161} is an apocalyptic number.

It is an amenable number.

13420899767161 is a deficient number, since it is larger than the sum of its proper divisors (2286749739).

13420899767161 is an equidigital number, since it uses as much as digits as its factorization.

13420899767161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286749738.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 13420899767161 in words is "thirteen trillion, four hundred twenty billion, eight hundred ninety-nine million, seven hundred sixty-seven thousand, one hundred sixty-one".