27706565591040 has 464 divisors, whose sum is σ = 101429947473408. Its totient is φ = 6326486827008.

The previous prime is 27706565591017. The next prime is 27706565591069. The reversal of 27706565591040 is 4019556560772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28185722389 + ... + 28185723371.

Almost surely, 2^{27706565591040} is an apocalyptic number.

27706565591040 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 27706565591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50714973736704).

27706565591040 is an abundant number, since it is smaller than the sum of its proper divisors (73723381882368).

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

27706565591040 is an frugal number, since it uses more digits than its factorization.

27706565591040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 57.

The spelling of 27706565591040 in words is "twenty-seven trillion, seven hundred six billion, five hundred sixty-five million, five hundred ninety-one thousand, forty".