27656979357 has 16 divisors (see below), whose sum is σ = 42475814912. Its totient is φ = 15679545840.

The previous prime is 27656979331. The next prime is 27656979359. The reversal of 27656979357 is 75397965672.

It is not a de Polignac number, because 27656979357 - 2⁶ = 27656979293 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 (27656979359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5182369 + ... + 5187702.

It is an arithmetic number, because the mean of its divisors is an integer number (2654738432).

Almost surely, 2^27656979357 is an apocalyptic number.

It is an amenable number.

27656979357 is a deficient number, since it is larger than the sum of its proper divisors (14818835555).

27656979357 is a wasteful number, since it uses less digits than its factorization.

27656979357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10370208.

The product of its digits is 150028200, while the sum is 66.

The spelling of 27656979357 in words is "twenty-seven billion, six hundred fifty-six million, nine hundred seventy-nine thousand, three hundred fifty-seven".