13023757731849 has 4 divisors (see below), whose sum is σ = 17365010309136. Its totient is φ = 8682505154564.

The previous prime is 13023757731781. The next prime is 13023757731863. The reversal of 13023757731849 is 94813775732031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13023757731849 - 2²¹ = 13023755634697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13023757731792 and 13023757731801.

It is not an unprimeable number, because it can be changed into a prime (13023757736849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170626288639 + ... + 2170626288644.

It is an arithmetic number, because the mean of its divisors is an integer number (4341252577284).

Almost surely, 2^{13023757731849} is an apocalyptic number.

It is an amenable number.

13023757731849 is a deficient number, since it is larger than the sum of its proper divisors (4341252577287).

13023757731849 is an equidigital number, since it uses as much as digits as its factorization.

13023757731849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341252577286.

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 13023757731849 in words is "thirteen trillion, twenty-three billion, seven hundred fifty-seven million, seven hundred thirty-one thousand, eight hundred forty-nine".