9876765655 has 16 divisors (see below), whose sum is σ = 12690315360. Its totient is φ = 7353060352.

The previous prime is 9876765653. The next prime is 9876765709. The reversal of 9876765655 is 5565676789.

It is a cyclic number.

It is not a de Polignac number, because 9876765655 - 2¹ = 9876765653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9876765653) 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, 645229 + ... + 660358.

It is an arithmetic number, because the mean of its divisors is an integer number (793144710).

Almost surely, 2^9876765655 is an apocalyptic number.

9876765655 is a deficient number, since it is larger than the sum of its proper divisors (2813549705).

9876765655 is a wasteful number, since it uses less digits than its factorization.

9876765655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305698.

The product of its digits is 95256000, while the sum is 64.

The square root of 9876765655 is about 99381.9181491281. The cubic root of 9876765655 is about 2145.5480732998.

The spelling of 9876765655 in words is "nine billion, eight hundred seventy-six million, seven hundred sixty-five thousand, six hundred fifty-five".