39645382340 has 48 divisors (see below), whose sum is σ = 85531076400. Its totient is φ = 15424929792.

The previous prime is 39645382327. The next prime is 39645382397. The reversal of 39645382340 is 4328354693.

It can be written as a sum of positive squares in 8 ways, for example, as 2225574976 + 37419807364 = 47176^2 + 193442^2 .

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, 3493796 + ... + 3505124.

It is an arithmetic number, because the mean of its divisors is an integer number (1781897425).

Almost surely, 2^39645382340 is an apocalyptic number.

It is an amenable number.

39645382340 is an abundant number, since it is smaller than the sum of its proper divisors (45885694060).

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

39645382340 is a wasteful number, since it uses less digits than its factorization.

39645382340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16104 (or 16102 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 39645382340 in words is "thirty-nine billion, six hundred forty-five million, three hundred eighty-two thousand, three hundred forty".