5136661264123 has 4 divisors (see below), whose sum is σ = 5313787514640. Its totient is φ = 4959535013608.

The previous prime is 5136661264103. The next prime is 5136661264139. The reversal of 5136661264123 is 3214621666315.

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

It is a cyclic number.

It is not a de Polignac number, because 5136661264123 - 2³⁷ = 4999222310651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5136661264103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88563125215 + ... + 88563125272.

It is an arithmetic number, because the mean of its divisors is an integer number (1328446878660).

Almost surely, 2^{5136661264123} is an apocalyptic number.

5136661264123 is a deficient number, since it is larger than the sum of its proper divisors (177126250517).

5136661264123 is a wasteful number, since it uses less digits than its factorization.

5136661264123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177126250516.

The product of its digits is 933120, while the sum is 46.

The spelling of 5136661264123 in words is "five trillion, one hundred thirty-six billion, six hundred sixty-one million, two hundred sixty-four thousand, one hundred twenty-three".