27497634991443 has 20 divisors (see below), whose sum is σ = 41091635042568. Its totient is φ = 18325097683200.

The previous prime is 27497634991433. The next prime is 27497634991487. The reversal of 27497634991443 is 34419943679472.

It is a happy number.

27497634991443 is a `hidden beast` number, since 2 + 7 + 4 + 97 + 6 + 3 + 4 + 9 + 91 + 443 = 666.

It is not a de Polignac number, because 27497634991443 - 2¹³ = 27497634983251 is a prime.

It is a super-2 number, since 2×27497634991443² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27497634991433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61432833 + ... + 61878818.

Almost surely, 2^{27497634991443} is an apocalyptic number.

27497634991443 is a deficient number, since it is larger than the sum of its proper divisors (13594000051125).

27497634991443 is a wasteful number, since it uses less digits than its factorization.

27497634991443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123314416 (or 123314407 counting only the distinct ones).

The product of its digits is 987614208, while the sum is 72.

The spelling of 27497634991443 in words is "twenty-seven trillion, four hundred ninety-seven billion, six hundred thirty-four million, nine hundred ninety-one thousand, four hundred forty-three".