39139542917937 has 48 divisors (see below), whose sum is σ = 70493513021568. Its totient is φ = 20329792957440.

The previous prime is 39139542917933. The next prime is 39139542917947. The reversal of 39139542917937 is 73971924593193.

It is a happy number.

39139542917937 is a `hidden beast` number, since 3 + 9 + 1 + 3 + 9 + 542 + 9 + 1 + 79 + 3 + 7 = 666.

It is not a de Polignac number, because 39139542917937 - 2² = 39139542917933 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39139542917933) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2407903 + ... + 9169355.

It is an arithmetic number, because the mean of its divisors is an integer number (1468614854616).

Almost surely, 2^{39139542917937} is an apocalyptic number.

It is an amenable number.

39139542917937 is a deficient number, since it is larger than the sum of its proper divisors (31353970103631).

39139542917937 is a wasteful number, since it uses less digits than its factorization.

39139542917937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769830 (or 6769827 counting only the distinct ones).

The product of its digits is 347208120, while the sum is 72.

The spelling of 39139542917937 in words is "thirty-nine trillion, one hundred thirty-nine billion, five hundred forty-two million, nine hundred seventeen thousand, nine hundred thirty-seven".