43641285631939 has 16 divisors (see below), whose sum is σ = 46208733389280. Its totient is φ = 41169070944000.

The previous prime is 43641285631859. The next prime is 43641285631969. The reversal of 43641285631939 is 93913658214634.

It is a cyclic number.

It is not a de Polignac number, because 43641285631939 - 2²³ = 43641277243331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43641285631969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147729852 + ... + 148024969.

It is an arithmetic number, because the mean of its divisors is an integer number (2888045836830).

Almost surely, 2^{43641285631939} is an apocalyptic number.

43641285631939 is a deficient number, since it is larger than the sum of its proper divisors (2567447757341).

43641285631939 is a wasteful number, since it uses less digits than its factorization.

43641285631939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295754982.

The product of its digits is 100776960, while the sum is 64.

The spelling of 43641285631939 in words is "forty-three trillion, six hundred forty-one billion, two hundred eighty-five million, six hundred thirty-one thousand, nine hundred thirty-nine".