12001771376 has 40 divisors (see below), whose sum is σ = 26605734624. Its totient is φ = 5137735680.

The previous prime is 12001771357. The next prime is 12001771387. The reversal of 12001771376 is 67317710021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37856 + ... + 159488.

Almost surely, 2^12001771376 is an apocalyptic number.

12001771376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12001771376 is an abundant number, since it is smaller than the sum of its proper divisors (14603963248).

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

12001771376 is a wasteful number, since it uses less digits than its factorization.

12001771376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122529 (or 122523 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 35.

The spelling of 12001771376 in words is "twelve billion, one million, seven hundred seventy-one thousand, three hundred seventy-six".