39661059361 has 16 divisors (see below), whose sum is σ = 50258176128. Its totient is φ = 30398083200.

The previous prime is 39661059353. The next prime is 39661059391. The reversal of 39661059361 is 16395016693.

It is a cyclic number.

It is not a de Polignac number, because 39661059361 - 2³ = 39661059353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39661059391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4217260 + ... + 4226653.

It is an arithmetic number, because the mean of its divisors is an integer number (3141136008).

Almost surely, 2^39661059361 is an apocalyptic number.

It is an amenable number.

39661059361 is a deficient number, since it is larger than the sum of its proper divisors (10597116767).

39661059361 is a wasteful number, since it uses less digits than its factorization.

39661059361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443992.

The product of its (nonzero) digits is 787320, while the sum is 49.

The spelling of 39661059361 in words is "thirty-nine billion, six hundred sixty-one million, fifty-nine thousand, three hundred sixty-one".