11856736059947 has 8 divisors (see below), whose sum is σ = 11884524897600. Its totient is φ = 11828971612864.

The previous prime is 11856736059937. The next prime is 11856736059983. The reversal of 11856736059947 is 74995063765811.

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-11856736059947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11856736059937) 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, 5124083 + ... + 7068924.

It is an arithmetic number, because the mean of its divisors is an integer number (1485565612200).

Almost surely, 2^{11856736059947} is an apocalyptic number.

11856736059947 is a deficient number, since it is larger than the sum of its proper divisors (27788837653).

11856736059947 is a wasteful number, since it uses less digits than its factorization.

11856736059947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12195285.

The product of its (nonzero) digits is 342921600, while the sum is 71.

The spelling of 11856736059947 in words is "eleven trillion, eight hundred fifty-six billion, seven hundred thirty-six million, fifty-nine thousand, nine hundred forty-seven".