43305640644378 has 32 divisors (see below), whose sum is σ = 99000466951680. Its totient is φ = 12371021999280.

The previous prime is 43305640644367. The next prime is 43305640644391. The reversal of 43305640644378 is 87344604650334.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83830468 + ... + 84345471.

It is an arithmetic number, because the mean of its divisors is an integer number (3093764592240).

Almost surely, 2^{43305640644378} is an apocalyptic number.

43305640644378 is an abundant number, since it is smaller than the sum of its proper divisors (55694826307302).

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

43305640644378 is a wasteful number, since it uses less digits than its factorization.

43305640644378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168182082.

The product of its (nonzero) digits is 69672960, while the sum is 57.

The spelling of 43305640644378 in words is "forty-three trillion, three hundred five billion, six hundred forty million, six hundred forty-four thousand, three hundred seventy-eight".