1563956832880 has 80 divisors (see below), whose sum is σ = 4122007737120. Its totient is φ = 547068294144.

The previous prime is 1563956832877. The next prime is 1563956832881. The reversal of 1563956832880 is 882386593651.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1563956832880² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563956832881) 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 15 ways as a sum of consecutive naturals, for example, 39554047 + ... + 39593566.

It is an arithmetic number, because the mean of its divisors is an integer number (51525096714).

Almost surely, 2^{1563956832880} is an apocalyptic number.

1563956832880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1563956832880 is an abundant number, since it is smaller than the sum of its proper divisors (2558050904240).

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

1563956832880 is a wasteful number, since it uses less digits than its factorization.

1563956832880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79147658 (or 79147652 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 64.

The spelling of 1563956832880 in words is "one trillion, five hundred sixty-three billion, nine hundred fifty-six million, eight hundred thirty-two thousand, eight hundred eighty".