27883378721 has 8 divisors (see below), whose sum is σ = 30421532064. Its totient is φ = 25345775520.

The previous prime is 27883378667. The next prime is 27883378741. The reversal of 27883378721 is 12787338872.

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 27883378721 - 2⁶ = 27883378657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27883378741) 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 7 ways as a sum of consecutive naturals, for example, 27740 + ... + 237773.

It is an arithmetic number, because the mean of its divisors is an integer number (3802691508).

Almost surely, 2^27883378721 is an apocalyptic number.

It is an amenable number.

27883378721 is a deficient number, since it is larger than the sum of its proper divisors (2538153343).

27883378721 is a wasteful number, since it uses less digits than its factorization.

27883378721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275071.

The product of its digits is 6322176, while the sum is 56.

It can be divided in two parts, 27883 and 378721, that added together give a palindrome (406604).

The spelling of 27883378721 in words is "twenty-seven billion, eight hundred eighty-three million, three hundred seventy-eight thousand, seven hundred twenty-one".