39641646742 has 8 divisors (see below), whose sum is σ = 59463355176. Its totient is φ = 19820528352.

The previous prime is 39641646739. The next prime is 39641646743. The reversal of 39641646742 is 24764614693.

39641646742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 39641646742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39641646743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111198 + ... + 302734.

It is an arithmetic number, because the mean of its divisors is an integer number (7432919397).

Almost surely, 2^39641646742 is an apocalyptic number.

39641646742 is a deficient number, since it is larger than the sum of its proper divisors (19821708434).

39641646742 is a wasteful number, since it uses less digits than its factorization.

39641646742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295022.

The product of its digits is 5225472, while the sum is 52.

The spelling of 39641646742 in words is "thirty-nine billion, six hundred forty-one million, six hundred forty-six thousand, seven hundred forty-two".