11474644143 has 4 divisors (see below), whose sum is σ = 15299525528. Its totient is φ = 7649762760.

The previous prime is 11474644117. The next prime is 11474644163. The reversal of 11474644143 is 34144647411.

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

It is not a de Polignac number, because 11474644143 - 2²² = 11470449839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11474644163) 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, 1912440688 + ... + 1912440693.

It is an arithmetic number, because the mean of its divisors is an integer number (3824881382).

Almost surely, 2^11474644143 is an apocalyptic number.

11474644143 is a deficient number, since it is larger than the sum of its proper divisors (3824881385).

11474644143 is an equidigital number, since it uses as much as digits as its factorization.

11474644143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824881384.

The product of its digits is 129024, while the sum is 39.

The spelling of 11474644143 in words is "eleven billion, four hundred seventy-four million, six hundred forty-four thousand, one hundred forty-three".