11646884531 has 8 divisors (see below), whose sum is σ = 11972979504. Its totient is φ = 11321385120.

The previous prime is 11646884479. The next prime is 11646884539. The reversal of 11646884531 is 13548864611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11646884531 is a prime.

It is a super-2 number, since 2×11646884531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11646884539) 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 in 7 ways as a sum of consecutive naturals, for example, 109085 + ... + 187598.

It is an arithmetic number, because the mean of its divisors is an integer number (1496622438).

Almost surely, 2^11646884531 is an apocalyptic number.

11646884531 is a deficient number, since it is larger than the sum of its proper divisors (326094973).

11646884531 is a wasteful number, since it uses less digits than its factorization.

11646884531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297781.

The product of its digits is 552960, while the sum is 47.

The spelling of 11646884531 in words is "eleven billion, six hundred forty-six million, eight hundred eighty-four thousand, five hundred thirty-one".