11857981147 has 2 divisors, whose sum is σ = 11857981148. Its totient is φ = 11857981146.

The previous prime is 11857981141. The next prime is 11857981153. The reversal of 11857981147 is 74118975811.

It is a balanced prime because it is at equal distance from previous prime (11857981141) and next prime (11857981153).

It is a cyclic number.

It is not a de Polignac number, because 11857981147 - 2²⁷ = 11723763419 is a prime.

It is a super-2 number, since 2×11857981147² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11857981094 and 11857981103.

It is not a weakly prime, because it can be changed into another prime (11857981141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5928990573 + 5928990574.

It is an arithmetic number, because the mean of its divisors is an integer number (5928990574).

Almost surely, 2^11857981147 is an apocalyptic number.

11857981147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857981147 is an equidigital number, since it uses as much as digits as its factorization.

11857981147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 52.

The spelling of 11857981147 in words is "eleven billion, eight hundred fifty-seven million, nine hundred eighty-one thousand, one hundred forty-seven".