43690999138 has 16 divisors (see below), whose sum is σ = 66383429760. Its totient is φ = 21563334000.

The previous prime is 43690999123. The next prime is 43690999151. The reversal of 43690999138 is 83199909634.

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 7 ways as a sum of consecutive naturals, for example, 605928 + ... + 674188.

It is an arithmetic number, because the mean of its divisors is an integer number (4148964360).

Almost surely, 2^43690999138 is an apocalyptic number.

43690999138 is a deficient number, since it is larger than the sum of its proper divisors (22692430622).

43690999138 is a wasteful number, since it uses less digits than its factorization.

43690999138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72393.

The product of its (nonzero) digits is 11337408, while the sum is 61.

The spelling of 43690999138 in words is "forty-three billion, six hundred ninety million, nine hundred ninety-nine thousand, one hundred thirty-eight".