39368351081 has 4 divisors (see below), whose sum is σ = 40111150212. Its totient is φ = 38625551952.

The previous prime is 39368351059. The next prime is 39368351129. The reversal of 39368351081 is 18015386393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18015386393 = 1151 ⋅15651943.

It can be written as a sum of positive squares in 2 ways, for example, as 24819166681 + 14549184400 = 157541^2 + 120620^2 .

It is a cyclic number.

It is not a de Polignac number, because 39368351081 - 2¹⁴ = 39368334697 is a prime.

It is a super-2 number, since 2×39368351081² (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 (39368350081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371399486 + ... + 371399591.

It is an arithmetic number, because the mean of its divisors is an integer number (10027787553).

Almost surely, 2^39368351081 is an apocalyptic number.

It is an amenable number.

39368351081 is a deficient number, since it is larger than the sum of its proper divisors (742799131).

39368351081 is an equidigital number, since it uses as much as digits as its factorization.

39368351081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742799130.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 39368351081 in words is "thirty-nine billion, three hundred sixty-eight million, three hundred fifty-one thousand, eighty-one".