27752863216 has 80 divisors (see below), whose sum is σ = 58770231520. Its totient is φ = 12619514880.

The previous prime is 27752863211. The next prime is 27752863217. The reversal of 27752863216 is 61236825772.

It is a self number, because there is not a number n which added to its sum of digits gives 27752863216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27752863211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4100251 + ... + 4107013.

It is an arithmetic number, because the mean of its divisors is an integer number (734627894).

Almost surely, 2^27752863216 is an apocalyptic number.

27752863216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27752863216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29385115760).

27752863216 is an abundant number, since it is smaller than the sum of its proper divisors (31017368304).

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

27752863216 is a wasteful number, since it uses less digits than its factorization.

27752863216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074 (or 7068 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The spelling of 27752863216 in words is "twenty-seven billion, seven hundred fifty-two million, eight hundred sixty-three thousand, two hundred sixteen".