39068129681 has 12 divisors (see below), whose sum is σ = 45449821872. Its totient is φ = 33484594248.

The previous prime is 39068129677. The next prime is 39068129713. The reversal of 39068129681 is 18692186093.

It is not a de Polignac number, because 39068129681 - 2² = 39068129677 is a prime.

It is a super-2 number, since 2×39068129681² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39068129621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1310366 + ... + 1339848.

It is an arithmetic number, because the mean of its divisors is an integer number (3787485156).

Almost surely, 2^39068129681 is an apocalyptic number.

It is an amenable number.

39068129681 is a deficient number, since it is larger than the sum of its proper divisors (6381692191).

39068129681 is a wasteful number, since it uses less digits than its factorization.

39068129681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56540 (or 56533 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 39068129681 in words is "thirty-nine billion, sixty-eight million, one hundred twenty-nine thousand, six hundred eighty-one".