27773344381 has 8 divisors (see below), whose sum is σ = 28122192000. Its totient is φ = 27424835712.

The previous prime is 27773344369. The next prime is 27773344439. The reversal of 27773344381 is 18344337772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27773344381 - 2¹³ = 27773336189 is a prime.

It is a super-2 number, since 2×27773344381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27773344301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82221 + ... + 249613.

It is an arithmetic number, because the mean of its divisors is an integer number (3515274000).

Almost surely, 2^27773344381 is an apocalyptic number.

It is an amenable number.

27773344381 is a deficient number, since it is larger than the sum of its proper divisors (348847619).

27773344381 is a wasteful number, since it uses less digits than its factorization.

27773344381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169475.

The product of its digits is 2370816, while the sum is 49.

The spelling of 27773344381 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred forty-four thousand, three hundred eighty-one".