12011802732 has 36 divisors (see below), whose sum is σ = 30657965520. Its totient is φ = 3965059872.

The previous prime is 12011802721. The next prime is 12011802757. The reversal of 12011802732 is 23720811021.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 12011802696 and 12011802705.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1616007 + ... + 1623422.

Almost surely, 2^12011802732 is an apocalyptic number.

12011802732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011802732 is an abundant number, since it is smaller than the sum of its proper divisors (18646162788).

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

12011802732 is a wasteful number, since it uses less digits than its factorization.

12011802732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239542 (or 3239537 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 12011802732 in words is "twelve billion, eleven million, eight hundred two thousand, seven hundred thirty-two".