39685010377 has 4 divisors (see below), whose sum is σ = 40130909460. Its totient is φ = 39239111296.

The previous prime is 39685010353. The next prime is 39685010399. The reversal of 39685010377 is 77301058693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17594430736 + 22090579641 = 132644^2 + 148629^2 .

It is a cyclic number.

It is not a de Polignac number, because 39685010377 - 2¹⁵ = 39684977609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39685010377.

It is not an unprimeable number, because it can be changed into a prime (39685016377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222949408 + ... + 222949585.

It is an arithmetic number, because the mean of its divisors is an integer number (10032727365).

Almost surely, 2^39685010377 is an apocalyptic number.

It is an amenable number.

39685010377 is a deficient number, since it is larger than the sum of its proper divisors (445899083).

39685010377 is an equidigital number, since it uses as much as digits as its factorization.

39685010377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445899082.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 39685010377 in words is "thirty-nine billion, six hundred eighty-five million, ten thousand, three hundred seventy-seven".