9977655395555 has 8 divisors (see below), whose sum is σ = 12083032222800. Its totient is φ = 7908893817696.

The previous prime is 9977655395501. The next prime is 9977655395581. The reversal of 9977655395555 is 5555935567799.

It is a happy number.

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 9977655395555 - 2²⁶ = 9977588286691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9977655395555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9153811745 + ... + 9153812834.

It is an arithmetic number, because the mean of its divisors is an integer number (1510379027850).

Almost surely, 2^{9977655395555} is an apocalyptic number.

9977655395555 is a deficient number, since it is larger than the sum of its proper divisors (2105376827245).

9977655395555 is a wasteful number, since it uses less digits than its factorization.

9977655395555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18307624693.

The product of its digits is 10046531250, while the sum is 80.

The spelling of 9977655395555 in words is "nine trillion, nine hundred seventy-seven billion, six hundred fifty-five million, three hundred ninety-five thousand, five hundred fifty-five".