27623354668 has 216 divisors, whose sum is σ = 65124939600. Its totient is φ = 10157301504.

The previous prime is 27623354657. The next prime is 27623354669. The reversal of 27623354668 is 86645332672.

It is a super-2 number, since 2×27623354668² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (27623354669) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 54269598 + ... + 54270106.

It is an arithmetic number, because the mean of its divisors is an integer number (301504350).

Almost surely, 2^27623354668 is an apocalyptic number.

27623354668 is a gapful number since it is divisible by the number (28) 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 27623354668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32562469800).

27623354668 is an abundant number, since it is smaller than the sum of its proper divisors (37501584932).

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

27623354668 is a wasteful number, since it uses less digits than its factorization.

27623354668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 609 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 52.

The spelling of 27623354668 in words is "twenty-seven billion, six hundred twenty-three million, three hundred fifty-four thousand, six hundred sixty-eight".