27157773868020 has 72 divisors (see below), whose sum is σ = 82699120098504. Its totient is φ = 7213893746688.

The previous prime is 27157773867997. The next prime is 27157773868037. The reversal of 27157773868020 is 2086837775172.

27157773868020 is a `hidden beast` number, since 2 + 7 + 1 + 577 + 7 + 38 + 6 + 8 + 0 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7647072131556 + 19510701736464 = 2765334^2 + 4417092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293487829 + ... + 293580348.

It is an arithmetic number, because the mean of its divisors is an integer number (1148598890257).

Almost surely, 2^{27157773868020} is an apocalyptic number.

27157773868020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27157773868020 is an abundant number, since it is smaller than the sum of its proper divisors (55541346230484).

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

27157773868020 is a wasteful number, since it uses less digits than its factorization.

27157773868020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587068449 (or 587068444 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 63.

The spelling of 27157773868020 in words is "twenty-seven trillion, one hundred fifty-seven billion, seven hundred seventy-three million, eight hundred sixty-eight thousand, twenty".