27656212394527 has 4 divisors (see below), whose sum is σ = 28609874890920. Its totient is φ = 26702549898136.

The previous prime is 27656212394497. The next prime is 27656212394533. The reversal of 27656212394527 is 72549321265672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27656212394527 is a prime.

It is a super-2 number, since 2×27656212394527² (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 (27656212394567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476831248153 + ... + 476831248210.

It is an arithmetic number, because the mean of its divisors is an integer number (7152468722730).

Almost surely, 2^{27656212394527} is an apocalyptic number.

27656212394527 is a deficient number, since it is larger than the sum of its proper divisors (953662496393).

27656212394527 is an equidigital number, since it uses as much as digits as its factorization.

27656212394527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953662496392.

The product of its digits is 76204800, while the sum is 61.

The spelling of 27656212394527 in words is "twenty-seven trillion, six hundred fifty-six billion, two hundred twelve million, three hundred ninety-four thousand, five hundred twenty-seven".