27430026531291 has 24 divisors (see below), whose sum is σ = 40293632637440. Its totient is φ = 17978862035376.

The previous prime is 27430026531269. The next prime is 27430026531311. The reversal of 27430026531291 is 19213562003472.

It is a happy number.

27430026531291 is a `hidden beast` number, since 2 + 7 + 4 + 3 + 0 + 0 + 26 + 531 + 2 + 91 = 666.

It is not a de Polignac number, because 27430026531291 - 2¹⁰ = 27430026530267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27430026531211) 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, 106310371 + ... + 106568076.

Almost surely, 2^{27430026531291} is an apocalyptic number.

27430026531291 is a deficient number, since it is larger than the sum of its proper divisors (12863606106149).

27430026531291 is a wasteful number, since it uses less digits than its factorization.

27430026531291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212878695 (or 212878692 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 27430026531291 in words is "twenty-seven trillion, four hundred thirty billion, twenty-six million, five hundred thirty-one thousand, two hundred ninety-one".