39955942655 has 8 divisors (see below), whose sum is σ = 48061566000. Its totient is φ = 31888464256.

The previous prime is 39955942643. The next prime is 39955942699. The reversal of 39955942655 is 55624955993.

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

It is a cyclic number.

It is not a de Polignac number, because 39955942655 - 2²⁴ = 39939165439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9533930 + ... + 9538119.

It is an arithmetic number, because the mean of its divisors is an integer number (6007695750).

Almost surely, 2^39955942655 is an apocalyptic number.

39955942655 is a deficient number, since it is larger than the sum of its proper divisors (8105623345).

39955942655 is a wasteful number, since it uses less digits than its factorization.

39955942655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19072473.

The product of its digits is 65610000, while the sum is 62.

The spelling of 39955942655 in words is "thirty-nine billion, nine hundred fifty-five million, nine hundred forty-two thousand, six hundred fifty-five".