13061665843 has 8 divisors (see below), whose sum is σ = 13751064320. Its totient is φ = 12372461640.

The previous prime is 13061665831. The next prime is 13061665849. The reversal of 13061665843 is 34856616031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13061665843 is a prime.

It is a super-2 number, since 2×13061665843² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13061665843.

It is not an unprimeable number, because it can be changed into a prime (13061665849) 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, 101338 + ... + 190768.

It is an arithmetic number, because the mean of its divisors is an integer number (1718883040).

Almost surely, 2^13061665843 is an apocalyptic number.

13061665843 is a deficient number, since it is larger than the sum of its proper divisors (689398477).

13061665843 is an equidigital number, since it uses as much as digits as its factorization.

13061665843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97137.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 13061665843 in words is "thirteen billion, sixty-one million, six hundred sixty-five thousand, eight hundred forty-three".