55605272765647 has 16 divisors (see below), whose sum is σ = 61163918325504. Its totient is φ = 50548350329400.

The previous prime is 55605272765633. The next prime is 55605272765689. The reversal of 55605272765647 is 74656727250655.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-55605272765647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605272765047) 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, 35308822 + ... + 36850012.

It is an arithmetic number, because the mean of its divisors is an integer number (3822744895344).

Almost surely, 2^{55605272765647} is an apocalyptic number.

55605272765647 is a deficient number, since it is larger than the sum of its proper divisors (5558645559857).

55605272765647 is a wasteful number, since it uses less digits than its factorization.

55605272765647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568331 (or 1568309 counting only the distinct ones).

The product of its (nonzero) digits is 740880000, while the sum is 67.

The spelling of 55605272765647 in words is "fifty-five trillion, six hundred five billion, two hundred seventy-two million, seven hundred sixty-five thousand, six hundred forty-seven".