27449245040640 has 576 divisors, whose sum is σ = 91162286036640. Its totient is φ = 7052470517760.

The previous prime is 27449245040621. The next prime is 27449245040641. The reversal of 27449245040640 is 4604054294472.

It is a super-2 number, since 2×27449245040640² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27449245040641) 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, 120921784207 + ... + 120921784433.

Almost surely, 2^{27449245040640} is an apocalyptic number.

27449245040640 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 27449245040640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45581143018320).

27449245040640 is an abundant number, since it is smaller than the sum of its proper divisors (63713040996000).

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

27449245040640 is an frugal number, since it uses more digits than its factorization.

27449245040640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 51.

The spelling of 27449245040640 in words is "twenty-seven trillion, four hundred forty-nine billion, two hundred forty-five million, forty thousand, six hundred forty".