27132743661 has 16 divisors (see below), whose sum is σ = 37771247616. Its totient is φ = 17292257136.

The previous prime is 27132743657. The next prime is 27132743719. The reversal of 27132743661 is 16634723172.

It is not a de Polignac number, because 27132743661 - 2² = 27132743657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27132783661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12756 + ... + 233298.

It is an arithmetic number, because the mean of its divisors is an integer number (2360702976).

Almost surely, 2^27132743661 is an apocalyptic number.

It is an amenable number.

27132743661 is a deficient number, since it is larger than the sum of its proper divisors (10638503955).

27132743661 is a wasteful number, since it uses less digits than its factorization.

27132743661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222352.

The product of its digits is 254016, while the sum is 42.

The spelling of 27132743661 in words is "twenty-seven billion, one hundred thirty-two million, seven hundred forty-three thousand, six hundred sixty-one".