39555081564 has 12 divisors (see below), whose sum is σ = 92295190344. Its totient is φ = 13185027184.

The previous prime is 39555081557. The next prime is 39555081641. The reversal of 39555081564 is 46518055593.

39555081564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 1648128387 + ... + 1648128410.

It is an arithmetic number, because the mean of its divisors is an integer number (7691265862).

Almost surely, 2^39555081564 is an apocalyptic number.

It is an amenable number.

39555081564 is an abundant number, since it is smaller than the sum of its proper divisors (52740108780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39555081564 is a wasteful number, since it uses less digits than its factorization.

39555081564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296256804 (or 3296256802 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 39555081564 in words is "thirty-nine billion, five hundred fifty-five million, eighty-one thousand, five hundred sixty-four".