27066420641 has 8 divisors (see below), whose sum is σ = 29859391464. Its totient is φ = 24375012480.

The previous prime is 27066420551. The next prime is 27066420643. The reversal of 27066420641 is 14602466072.

It can be written as a sum of positive squares in 4 ways, for example, as 457960000 + 26608460641 = 21400^2 + 163121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27066420641 - 2¹⁴ = 27066404257 is a prime.

It is a super-2 number, since 2×27066420641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27066420595 and 27066420604.

It is not an unprimeable number, because it can be changed into a prime (27066420643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25390106 + ... + 25391171.

It is an arithmetic number, because the mean of its divisors is an integer number (3732423933).

Almost surely, 2^27066420641 is an apocalyptic number.

It is an amenable number.

27066420641 is a deficient number, since it is larger than the sum of its proper divisors (2792970823).

27066420641 is a wasteful number, since it uses less digits than its factorization.

27066420641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50781331.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 27066420641 in words is "twenty-seven billion, sixty-six million, four hundred twenty thousand, six hundred forty-one".