11531653646 has 8 divisors (see below), whose sum is σ = 17303781000. Its totient is φ = 5763726648.

The previous prime is 11531653633. The next prime is 11531653649. The reversal of 11531653646 is 64635613511.

11531653646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×11531653646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531653649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1043216 + ... + 1054211.

It is an arithmetic number, because the mean of its divisors is an integer number (2162972625).

Almost surely, 2^11531653646 is an apocalyptic number.

11531653646 is a deficient number, since it is larger than the sum of its proper divisors (5772127354).

11531653646 is a wasteful number, since it uses less digits than its factorization.

11531653646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100178.

The product of its digits is 194400, while the sum is 41.

The spelling of 11531653646 in words is "eleven billion, five hundred thirty-one million, six hundred fifty-three thousand, six hundred forty-six".