11728694964 has 48 divisors (see below), whose sum is σ = 32003890688. Its totient is φ = 3273123168.

The previous prime is 11728694963. The next prime is 11728695001. The reversal of 11728694964 is 46949682711.

It is a super-2 number, since 2×11728694964² (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 (11728694963) 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 15 ways as a sum of consecutive naturals, for example, 1619962 + ... + 1627185.

Almost surely, 2^11728694964 is an apocalyptic number.

11728694964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11728694964 is an abundant number, since it is smaller than the sum of its proper divisors (20275195724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11728694964 is a wasteful number, since it uses less digits than its factorization.

11728694964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247204 (or 3247202 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The spelling of 11728694964 in words is "eleven billion, seven hundred twenty-eight million, six hundred ninety-four thousand, nine hundred sixty-four".