11947347135 has 12 divisors (see below), whose sum is σ = 20708735112. Its totient is φ = 6371918448.

The previous prime is 11947347127. The next prime is 11947347143. The reversal of 11947347135 is 53174374911.

11947347135 is a `hidden beast` number, since 1 + 1 + 9 + 473 + 47 + 135 = 666.

11947347135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11947347127) and next prime (11947347143).

It is not a de Polignac number, because 11947347135 - 2³ = 11947347127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 265496603 = 11947347135 / (1 + 1 + 9 + 4 + 7 + 3 + 4 + 7 + 1 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 132748257 + ... + 132748346.

It is an arithmetic number, because the mean of its divisors is an integer number (1725727926).

Almost surely, 2^11947347135 is an apocalyptic number.

11947347135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11947347135 is a deficient number, since it is larger than the sum of its proper divisors (8761387977).

11947347135 is a wasteful number, since it uses less digits than its factorization.

11947347135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265496614 (or 265496611 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 11947347135 in words is "eleven billion, nine hundred forty-seven million, three hundred forty-seven thousand, one hundred thirty-five".