11631340447 has 8 divisors (see below), whose sum is σ = 12321503600. Its totient is φ = 10948976064.

The previous prime is 11631340439. The next prime is 11631340451. The reversal of 11631340447 is 74404313611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11631340447 - 2³ = 11631340439 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 (11631340477) 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, 1946622 + ... + 1952587.

It is an arithmetic number, because the mean of its divisors is an integer number (1540187950).

Almost surely, 2^11631340447 is an apocalyptic number.

11631340447 is a deficient number, since it is larger than the sum of its proper divisors (690163153).

11631340447 is a wasteful number, since it uses less digits than its factorization.

11631340447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899385.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 11631340447 in words is "eleven billion, six hundred thirty-one million, three hundred forty thousand, four hundred forty-seven".