27726678473 has 64 divisors (see below), whose sum is σ = 33116160000. Its totient is φ = 22985544960.

The previous prime is 27726678467. The next prime is 27726678521. The reversal of 27726678473 is 37487662772.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27726678473 - 2¹⁰ = 27726677449 is a prime.

It is a super-2 number, since 2×27726678473² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27726678403) 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 63 ways as a sum of consecutive naturals, for example, 116011088 + ... + 116011326.

It is an arithmetic number, because the mean of its divisors is an integer number (517440000).

Almost surely, 2^27726678473 is an apocalyptic number.

It is an amenable number.

27726678473 is a deficient number, since it is larger than the sum of its proper divisors (5389481527).

27726678473 is a wasteful number, since it uses less digits than its factorization.

27726678473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its digits is 33191424, while the sum is 59.

The spelling of 27726678473 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred seventy-eight thousand, four hundred seventy-three".