39907142681 has 8 divisors (see below), whose sum is σ = 45623864640. Its totient is φ = 34194346128.

The previous prime is 39907142641. The next prime is 39907142713. The reversal of 39907142681 is 18624170993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39907142681 - 2⁶ = 39907142617 is a prime.

It is a super-2 number, since 2×39907142681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39907142641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959531 + ... + 1000256.

It is an arithmetic number, because the mean of its divisors is an integer number (5702983080).

Almost surely, 2^39907142681 is an apocalyptic number.

It is an amenable number.

39907142681 is a deficient number, since it is larger than the sum of its proper divisors (5716721959).

39907142681 is a wasteful number, since it uses less digits than its factorization.

39907142681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962703.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 39907142681 in words is "thirty-nine billion, nine hundred seven million, one hundred forty-two thousand, six hundred eighty-one".