11471440147 has 4 divisors (see below), whose sum is σ = 11578649976. Its totient is φ = 11364230320.

The previous prime is 11471440103. The next prime is 11471440237. The reversal of 11471440147 is 74104417411.

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

It is not a de Polignac number, because 11471440147 - 2²³ = 11463051539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11471440847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53604754 + ... + 53604967.

It is an arithmetic number, because the mean of its divisors is an integer number (2894662494).

Almost surely, 2^11471440147 is an apocalyptic number.

11471440147 is a deficient number, since it is larger than the sum of its proper divisors (107209829).

11471440147 is a wasteful number, since it uses less digits than its factorization.

11471440147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107209828.

The product of its (nonzero) digits is 12544, while the sum is 34.

Adding to 11471440147 its reverse (74104417411), we get a palindrome (85575857558).

The spelling of 11471440147 in words is "eleven billion, four hundred seventy-one million, four hundred forty thousand, one hundred forty-seven".