27785503543980 has 192 divisors, whose sum is σ = 101385656709120. Its totient is φ = 5517586722816.

The previous prime is 27785503543943. The next prime is 27785503543999. The reversal of 27785503543980 is 8934530558772.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149581300 + ... + 149766939.

It is an arithmetic number, because the mean of its divisors is an integer number (528050295360).

Almost surely, 2^{27785503543980} is an apocalyptic number.

27785503543980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27785503543980 is an abundant number, since it is smaller than the sum of its proper divisors (73600153165140).

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

27785503543980 is a wasteful number, since it uses less digits than its factorization.

27785503543980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299348288 (or 299348286 counting only the distinct ones).

The product of its (nonzero) digits is 254016000, while the sum is 66.

The spelling of 27785503543980 in words is "twenty-seven trillion, seven hundred eighty-five billion, five hundred three million, five hundred forty-three thousand, nine hundred eighty".