27449694720 has 400 divisors, whose sum is σ = 112367236608. Its totient is φ = 6273884160.

The previous prime is 27449694719. The next prime is 27449694733. The reversal of 27449694720 is 2749694472.

27449694720 is a `hidden beast` number, since 2 + 74 + 49 + 69 + 472 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1442065 + ... + 1460975.

Almost surely, 2^27449694720 is an apocalyptic number.

27449694720 is a gapful number since it is divisible by the number (20) 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 27449694720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56183618304).

27449694720 is an abundant number, since it is smaller than the sum of its proper divisors (84917541888).

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

27449694720 is an equidigital number, since it uses as much as digits as its factorization.

27449694720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18953 (or 18928 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 27449694720 in words is "twenty-seven billion, four hundred forty-nine million, six hundred ninety-four thousand, seven hundred twenty".