27402928891 has 8 divisors (see below), whose sum is σ = 29522159744. Its totient is φ = 25285314240.

The previous prime is 27402928867. The next prime is 27402928897. The reversal of 27402928891 is 19882920472.

It is a happy number.

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 27402928891 - 2¹¹ = 27402926843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27402928897) 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, 368715 + ... + 436756.

It is an arithmetic number, because the mean of its divisors is an integer number (3690269968).

Almost surely, 2^27402928891 is an apocalyptic number.

27402928891 is a deficient number, since it is larger than the sum of its proper divisors (2119230853).

27402928891 is a wasteful number, since it uses less digits than its factorization.

27402928891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808101.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 27402928891 in words is "twenty-seven billion, four hundred two million, nine hundred twenty-eight thousand, eight hundred ninety-one".