27656213496 has 128 divisors (see below), whose sum is σ = 77825836800. Its totient is φ = 8138188800.

The previous prime is 27656213467. The next prime is 27656213509. The reversal of 27656213496 is 69431265672.

It is a super-2 number, since 2×27656213496² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765291 + ... + 800613.

It is an arithmetic number, because the mean of its divisors is an integer number (608014350).

Almost surely, 2^27656213496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27656213496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38912918400).

27656213496 is an abundant number, since it is smaller than the sum of its proper divisors (50169623304).

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

27656213496 is a wasteful number, since it uses less digits than its factorization.

27656213496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35469 (or 35465 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 51.

The spelling of 27656213496 in words is "twenty-seven billion, six hundred fifty-six million, two hundred thirteen thousand, four hundred ninety-six".