27206222643 has 6 divisors (see below), whose sum is σ = 39297877164. Its totient is φ = 18137481756.

The previous prime is 27206222621. The next prime is 27206222653. The reversal of 27206222643 is 34622260272.

27206222643 is a `hidden beast` number, since 2 + 7 + 2 + 0 + 6 + 2 + 2 + 2 + 643 = 666.

It is not a de Polignac number, because 27206222643 - 2⁵ = 27206222611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27206222598 and 27206222607.

It is not an unprimeable number, because it can be changed into a prime (27206222653) 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 5 ways as a sum of consecutive naturals, for example, 1511456805 + ... + 1511456822.

It is an arithmetic number, because the mean of its divisors is an integer number (6549646194).

Almost surely, 2^27206222643 is an apocalyptic number.

27206222643 is a deficient number, since it is larger than the sum of its proper divisors (12091654521).

27206222643 is a wasteful number, since it uses less digits than its factorization.

27206222643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022913633 (or 3022913630 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 27206222643 in words is "twenty-seven billion, two hundred six million, two hundred twenty-two thousand, six hundred forty-three".