43780879642 has 16 divisors (see below), whose sum is σ = 66171484512. Its totient is φ = 21724063920.

The previous prime is 43780879631. The next prime is 43780879657. The reversal of 43780879642 is 24697808734.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168693 + ... + 340615.

It is an arithmetic number, because the mean of its divisors is an integer number (4135717782).

Almost surely, 2^43780879642 is an apocalyptic number.

43780879642 is a deficient number, since it is larger than the sum of its proper divisors (22390604870).

43780879642 is a wasteful number, since it uses less digits than its factorization.

43780879642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172893.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 43780879642 in words is "forty-three billion, seven hundred eighty million, eight hundred seventy-nine thousand, six hundred forty-two".