27523200643 has 2 divisors, whose sum is σ = 27523200644. Its totient is φ = 27523200642.

The previous prime is 27523200629. The next prime is 27523200701. The reversal of 27523200643 is 34600232572.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27523200643 is a prime.

It is a super-2 number, since 2×27523200643² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27523200599 and 27523200608.

It is not a weakly prime, because it can be changed into another prime (27523200043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13761600321 + 13761600322.

It is an arithmetic number, because the mean of its divisors is an integer number (13761600322).

Almost surely, 2^27523200643 is an apocalyptic number.

27523200643 is a deficient number, since it is larger than the sum of its proper divisors (1).

27523200643 is an equidigital number, since it uses as much as digits as its factorization.

27523200643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 27523200643 in words is "twenty-seven billion, five hundred twenty-three million, two hundred thousand, six hundred forty-three".