39439372761045 has 48 divisors (see below), whose sum is σ = 69418999009152. Its totient is φ = 20709780658560.

The previous prime is 39439372761037. The next prime is 39439372761049. The reversal of 39439372761045 is 54016727393493.

39439372761045 is a `hidden beast` number, since 3 + 9 + 4 + 3 + 9 + 3 + 7 + 2 + 7 + 610 + 4 + 5 = 666.

It is not a de Polignac number, because 39439372761045 - 2³ = 39439372761037 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39439372761049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6078319 + ... + 10762188.

It is an arithmetic number, because the mean of its divisors is an integer number (1446229146024).

Almost surely, 2^{39439372761045} is an apocalyptic number.

It is an amenable number.

39439372761045 is a deficient number, since it is larger than the sum of its proper divisors (29979626248107).

39439372761045 is a wasteful number, since it uses less digits than its factorization.

39439372761045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16841322 (or 16841319 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 63.

The spelling of 39439372761045 in words is "thirty-nine trillion, four hundred thirty-nine billion, three hundred seventy-two million, seven hundred sixty-one thousand, forty-five".