9555640813779 has 4 divisors (see below), whose sum is σ = 12740854418376. Its totient is φ = 6370427209184.

The previous prime is 9555640813759. The next prime is 9555640813781. The reversal of 9555640813779 is 9773180465559.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9555640813779 - 2⁹ = 9555640813267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9555640813709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1592606802294 + ... + 1592606802299.

It is an arithmetic number, because the mean of its divisors is an integer number (3185213604594).

Almost surely, 2^{9555640813779} is an apocalyptic number.

9555640813779 is a deficient number, since it is larger than the sum of its proper divisors (3185213604597).

9555640813779 is a wasteful number, since it uses less digits than its factorization.

9555640813779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185213604596.

The product of its (nonzero) digits is 285768000, while the sum is 69.

The spelling of 9555640813779 in words is "nine trillion, five hundred fifty-five billion, six hundred forty million, eight hundred thirteen thousand, seven hundred seventy-nine".