39677742665 has 8 divisors (see below), whose sum is σ = 51941772288. Its totient is φ = 28856540080.

The previous prime is 39677742659. The next prime is 39677742683. The reversal of 39677742665 is 56624777693.

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

It is not a de Polignac number, because 39677742665 - 2¹⁶ = 39677677129 is a prime.

It is a super-2 number, since 2×39677742665² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39677742598 and 39677742607.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 360706697 + ... + 360706806.

It is an arithmetic number, because the mean of its divisors is an integer number (6492721536).

Almost surely, 2^39677742665 is an apocalyptic number.

It is an amenable number.

39677742665 is a deficient number, since it is larger than the sum of its proper divisors (12264029623).

39677742665 is a wasteful number, since it uses less digits than its factorization.

39677742665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721413519.

The product of its digits is 80015040, while the sum is 62.

The spelling of 39677742665 in words is "thirty-nine billion, six hundred seventy-seven million, seven hundred forty-two thousand, six hundred sixty-five".