27251720606 has 8 divisors (see below), whose sum is σ = 44593724664. Its totient is φ = 12387145720.

The previous prime is 27251720569. The next prime is 27251720611. The reversal of 27251720606 is 60602715272.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27251720606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619357265 + ... + 619357308.

It is an arithmetic number, because the mean of its divisors is an integer number (5574215583).

Almost surely, 2^27251720606 is an apocalyptic number.

27251720606 is a deficient number, since it is larger than the sum of its proper divisors (17342004058).

27251720606 is a wasteful number, since it uses less digits than its factorization.

27251720606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238714586.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 27251720606 in words is "twenty-seven billion, two hundred fifty-one million, seven hundred twenty thousand, six hundred six".