27777675409 has 8 divisors (see below), whose sum is σ = 30305485440. Its totient is φ = 25250293200.

The previous prime is 27777675397. The next prime is 27777675451. The reversal of 27777675409 is 90457677772.

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

It is not a de Polignac number, because 27777675409 - 2¹¹ = 27777673361 is a prime.

It is a super-2 number, since 2×27777675409² (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 (27777672409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37272 + ... + 238630.

It is an arithmetic number, because the mean of its divisors is an integer number (3788185680).

Almost surely, 2^27777675409 is an apocalyptic number.

It is an amenable number.

27777675409 is a deficient number, since it is larger than the sum of its proper divisors (2527810031).

27777675409 is a wasteful number, since it uses less digits than its factorization.

27777675409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213911.

The product of its (nonzero) digits is 36303120, while the sum is 61.

The spelling of 27777675409 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, four hundred nine".