11649379992 has 32 divisors (see below), whose sum is σ = 29127930480. Its totient is φ = 3882529280.

The previous prime is 11649379991. The next prime is 11649379993. The reversal of 11649379992 is 29997394611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11649379991) and next prime (11649379993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11649379991) 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, 138892 + ... + 206372.

Almost surely, 2^11649379992 is an apocalyptic number.

11649379992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11649379992 is an abundant number, since it is smaller than the sum of its proper divisors (17478550488).

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

11649379992 is a wasteful number, since it uses less digits than its factorization.

11649379992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74683 (or 74679 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 60.

The spelling of 11649379992 in words is "eleven billion, six hundred forty-nine million, three hundred seventy-nine thousand, nine hundred ninety-two".