986941781856 has 96 divisors (see below), whose sum is σ = 2910924021600. Its totient is φ = 325284157440.

The previous prime is 986941781789. The next prime is 986941781879. The reversal of 986941781856 is 658187149689.

986941781856 is a `hidden beast` number, since 9 + 86 + 9 + 417 + 81 + 8 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6340485 + ... + 6494276.

It is an arithmetic number, because the mean of its divisors is an integer number (30322125225).

Almost surely, 2^986941781856 is an apocalyptic number.

986941781856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

986941781856 is an abundant number, since it is smaller than the sum of its proper divisors (1923982239744).

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

986941781856 is a wasteful number, since it uses less digits than its factorization.

986941781856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834869 (or 12834855 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 72.

The spelling of 986941781856 in words is "nine hundred eighty-six billion, nine hundred forty-one million, seven hundred eighty-one thousand, eight hundred fifty-six".