39661625708 has 12 divisors (see below), whose sum is σ = 69613805352. Its totient is φ = 19771967040.

The previous prime is 39661625687. The next prime is 39661625741. The reversal of 39661625708 is 80752616693.

It is a self number, because there is not a number n which added to its sum of digits gives 39661625708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14709938 + ... + 14712633.

It is an arithmetic number, because the mean of its divisors is an integer number (5801150446).

Almost surely, 2^39661625708 is an apocalyptic number.

It is an amenable number.

39661625708 is a deficient number, since it is larger than the sum of its proper divisors (29952179644).

39661625708 is a wasteful number, since it uses less digits than its factorization.

39661625708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29422912 (or 29422910 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 39661625708 in words is "thirty-nine billion, six hundred sixty-one million, six hundred twenty-five thousand, seven hundred eight".