43340665721608 has 16 divisors (see below), whose sum is σ = 82992764148480. Its totient is φ = 21209261948688.

The previous prime is 43340665721593. The next prime is 43340665721669. The reversal of 43340665721608 is 80612756604334.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57633863616 + ... + 57633864367.

It is an arithmetic number, because the mean of its divisors is an integer number (5187047759280).

Almost surely, 2^{43340665721608} is an apocalyptic number.

It is an amenable number.

43340665721608 is a deficient number, since it is larger than the sum of its proper divisors (39652098426872).

43340665721608 is a wasteful number, since it uses less digits than its factorization.

43340665721608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115267728036 (or 115267728032 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 43340665721608 in words is "forty-three trillion, three hundred forty billion, six hundred sixty-five million, seven hundred twenty-one thousand, six hundred eight".