43381028115 has 32 divisors (see below), whose sum is σ = 77314248000. Its totient is φ = 23078822400.

The previous prime is 43381028113. The next prime is 43381028129. The reversal of 43381028115 is 51182018334.

43381028115 is a `hidden beast` number, since 433 + 8 + 102 + 8 + 115 = 666.

It is not a de Polignac number, because 43381028115 - 2¹ = 43381028113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43381028115.

It is not an unprimeable number, because it can be changed into a prime (43381028113) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 346540 + ... + 454809.

It is an arithmetic number, because the mean of its divisors is an integer number (2416070250).

Almost surely, 2^43381028115 is an apocalyptic number.

43381028115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43381028115 is a deficient number, since it is larger than the sum of its proper divisors (33933219885).

43381028115 is a wasteful number, since it uses less digits than its factorization.

43381028115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801764 (or 801758 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 43381028115 in words is "forty-three billion, three hundred eighty-one million, twenty-eight thousand, one hundred fifteen".