43377864128 has 14 divisors (see below), whose sum is σ = 86077949256. Its totient is φ = 21688932032.

The previous prime is 43377864121. The next prime is 43377864137. The reversal of 43377864128 is 82146877334.

It is a self number, because there is not a number n which added to its sum of digits gives 43377864128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43377864121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338889500 + ... + 338889627.

Almost surely, 2^43377864128 is an apocalyptic number.

It is an amenable number.

43377864128 is a deficient number, since it is larger than the sum of its proper divisors (42700085128).

43377864128 is an equidigital number, since it uses as much as digits as its factorization.

43377864128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677779139 (or 677779129 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 53.

The spelling of 43377864128 in words is "forty-three billion, three hundred seventy-seven million, eight hundred sixty-four thousand, one hundred twenty-eight".