12011249688 has 64 divisors (see below), whose sum is σ = 30801600000. Its totient is φ = 3901368192.

The previous prime is 12011249671. The next prime is 12011249693. The reversal of 12011249688 is 88694211021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235063 + ... + 281561.

It is an arithmetic number, because the mean of its divisors is an integer number (481275000).

Almost surely, 2^12011249688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011249688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15400800000).

12011249688 is an abundant number, since it is smaller than the sum of its proper divisors (18790350312).

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

12011249688 is a wasteful number, since it uses less digits than its factorization.

12011249688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46784 (or 46780 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 12011249688 in words is "twelve billion, eleven million, two hundred forty-nine thousand, six hundred eighty-eight".