27251223408 has 120 divisors (see below), whose sum is σ = 78986658816. Its totient is φ = 8765097600.

The previous prime is 27251223407. The next prime is 27251223449. The reversal of 27251223408 is 80432215272.

27251223408 is a `hidden beast` number, since 2 + 7 + 25 + 1 + 223 + 408 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27251223407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452173 + ... + 508883.

Almost surely, 2^27251223408 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 27251223408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39493329408).

27251223408 is an abundant number, since it is smaller than the sum of its proper divisors (51735435408).

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

27251223408 is a wasteful number, since it uses less digits than its factorization.

27251223408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56843 (or 56834 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 27251223408 in words is "twenty-seven billion, two hundred fifty-one million, two hundred twenty-three thousand, four hundred eight".