27643607045 has 8 divisors (see below), whose sum is σ = 33189518880. Its totient is φ = 22103425360.

The previous prime is 27643607021. The next prime is 27643607051. The reversal of 27643607045 is 54070634672.

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

It is not a de Polignac number, because 27643607045 - 2²⁰ = 27642558469 is a prime.

It is a super-3 number, since 3×27643607045³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27643606987 and 27643607005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1421915 + ... + 1441224.

It is an arithmetic number, because the mean of its divisors is an integer number (4148689860).

Almost surely, 2^27643607045 is an apocalyptic number.

It is an amenable number.

27643607045 is a deficient number, since it is larger than the sum of its proper divisors (5545911835).

27643607045 is a wasteful number, since it uses less digits than its factorization.

27643607045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865075.

The product of its (nonzero) digits is 846720, while the sum is 44.

The spelling of 27643607045 in words is "twenty-seven billion, six hundred forty-three million, six hundred seven thousand, forty-five".