27250716643 has 8 divisors (see below), whose sum is σ = 27313184448. Its totient is φ = 27188320704.

The previous prime is 27250716637. The next prime is 27250716653. The reversal of 27250716643 is 34661705272.

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

It is a cyclic number.

It is not a de Polignac number, because 27250716643 - 2⁹ = 27250716131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27250716643.

It is not an unprimeable number, because it can be changed into a prime (27250716653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781446 + ... + 815572.

It is an arithmetic number, because the mean of its divisors is an integer number (3414148056).

Almost surely, 2^27250716643 is an apocalyptic number.

27250716643 is a deficient number, since it is larger than the sum of its proper divisors (62467805).

27250716643 is a wasteful number, since it uses less digits than its factorization.

27250716643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35933.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 27250716643 in words is "twenty-seven billion, two hundred fifty million, seven hundred sixteen thousand, six hundred forty-three".