12077081840 has 20 divisors (see below), whose sum is σ = 28079215464. Its totient is φ = 4830832704.

The previous prime is 12077081839. The next prime is 12077081869. The reversal of 12077081840 is 4818077021.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 12077081794 and 12077081803.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 75481682 + ... + 75481841.

Almost surely, 2^12077081840 is an apocalyptic number.

12077081840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12077081840 is an abundant number, since it is smaller than the sum of its proper divisors (16002133624).

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

12077081840 is a wasteful number, since it uses less digits than its factorization.

12077081840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150963536 (or 150963530 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The spelling of 12077081840 in words is "twelve billion, seventy-seven million, eighty-one thousand, eight hundred forty".