27964812552647 has 8 divisors (see below), whose sum is σ = 29436734476800. Its totient is φ = 26492899596984.

The previous prime is 27964812552641. The next prime is 27964812552653. The reversal of 27964812552647 is 74625521846972.

It is an interprime number because it is at equal distance from previous prime (27964812552641) and next prime (27964812552653).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27964812552647 is a prime.

It is a super-2 number, since 2×27964812552647² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27964812552641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4711178 + ... + 8838824.

It is an arithmetic number, because the mean of its divisors is an integer number (3679591809600).

Almost surely, 2^{27964812552647} is an apocalyptic number.

27964812552647 is a deficient number, since it is larger than the sum of its proper divisors (1471921924153).

27964812552647 is a wasteful number, since it uses less digits than its factorization.

27964812552647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484245.

The product of its digits is 406425600, while the sum is 68.

The spelling of 27964812552647 in words is "twenty-seven trillion, nine hundred sixty-four billion, eight hundred twelve million, five hundred fifty-two thousand, six hundred forty-seven".