9681158774780 has 48 divisors (see below), whose sum is σ = 20573550021024. Its totient is φ = 3826409333760.

The previous prime is 9681158774761. The next prime is 9681158774809. The reversal of 9681158774780 is 874778511869.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7318937 + ... + 8539856.

It is an arithmetic number, because the mean of its divisors is an integer number (428615625438).

Almost surely, 2^{9681158774780} is an apocalyptic number.

It is an amenable number.

9681158774780 is an abundant number, since it is smaller than the sum of its proper divisors (10892391246244).

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

9681158774780 is a wasteful number, since it uses less digits than its factorization.

9681158774780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15859166 (or 15859164 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 71.

The spelling of 9681158774780 in words is "nine trillion, six hundred eighty-one billion, one hundred fifty-eight million, seven hundred seventy-four thousand, seven hundred eighty".