27073920820 has 24 divisors (see below), whose sum is σ = 57270241224. Its totient is φ = 10750519296.

The previous prime is 27073920751. The next prime is 27073920821. The reversal of 27073920820 is 2802937072.

It can be written as a sum of positive squares in 4 ways, for example, as 1241716644 + 25832204176 = 35238^2 + 160724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27073920821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4937757 + ... + 4943236.

It is an arithmetic number, because the mean of its divisors is an integer number (2386260051).

Almost surely, 2^27073920820 is an apocalyptic number.

27073920820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27073920820 is an abundant number, since it is smaller than the sum of its proper divisors (30196320404).

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

27073920820 is a wasteful number, since it uses less digits than its factorization.

27073920820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9881139 (or 9881137 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 27073920820 in words is "twenty-seven billion, seventy-three million, nine hundred twenty thousand, eight hundred twenty".