1963781822880 has 72 divisors (see below), whose sum is σ = 6701405475492. Its totient is φ = 523675152384.

The previous prime is 1963781822833. The next prime is 1963781822897. The reversal of 1963781822880 is 882281873691.

1963781822880 is a `hidden beast` number, since 1 + 9 + 6 + 378 + 182 + 2 + 8 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1956719773584 + 7062049296 = 1398828^2 + 84036^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681867249 + ... + 681870128.

Almost surely, 2^{1963781822880} is an apocalyptic number.

1963781822880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1963781822880 is an abundant number, since it is smaller than the sum of its proper divisors (4737623652612).

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

1963781822880 is a wasteful number, since it uses less digits than its factorization.

1963781822880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363737398 (or 1363737387 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 1963781822880 in words is "one trillion, nine hundred sixty-three billion, seven hundred eighty-one million, eight hundred twenty-two thousand, eight hundred eighty".