39138075129 has 32 divisors (see below), whose sum is σ = 55965842560. Its totient is φ = 24254899200.

The previous prime is 39138075103. The next prime is 39138075149. The reversal of 39138075129 is 92157083193.

It is not a de Polignac number, because 39138075129 - 2⁷ = 39138075001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39138075149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1450449 + ... + 1477185.

It is an arithmetic number, because the mean of its divisors is an integer number (1748932580).

Almost surely, 2^39138075129 is an apocalyptic number.

It is an amenable number.

39138075129 is a deficient number, since it is larger than the sum of its proper divisors (16827767431).

39138075129 is a wasteful number, since it uses less digits than its factorization.

39138075129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27241.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 39138075129 in words is "thirty-nine billion, one hundred thirty-eight million, seventy-five thousand, one hundred twenty-nine".