39696545865 has 8 divisors (see below), whose sum is σ = 63514473408. Its totient is φ = 21171491120.

The previous prime is 39696545857. The next prime is 39696545869. The reversal of 39696545865 is 56854569693.

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

It is not a de Polignac number, because 39696545865 - 2³ = 39696545857 is a prime.

It is a super-2 number, since 2×39696545865² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39696545796 and 39696545805.

It is not an unprimeable number, because it can be changed into a prime (39696545869) 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, 1323218181 + ... + 1323218210.

It is an arithmetic number, because the mean of its divisors is an integer number (7939309176).

Almost surely, 2^39696545865 is an apocalyptic number.

It is an amenable number.

39696545865 is a deficient number, since it is larger than the sum of its proper divisors (23817927543).

39696545865 is a wasteful number, since it uses less digits than its factorization.

39696545865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646436399.

The product of its digits is 209952000, while the sum is 66.

The spelling of 39696545865 in words is "thirty-nine billion, six hundred ninety-six million, five hundred forty-five thousand, eight hundred sixty-five".