27887354977 has 8 divisors (see below), whose sum is σ = 29074313664. Its totient is φ = 26724869808.

The previous prime is 27887354969. The next prime is 27887354981. The reversal of 27887354977 is 77945378872.

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

It is a cyclic number.

It is not a de Polignac number, because 27887354977 - 2³ = 27887354969 is a prime.

It is a super-2 number, since 2×27887354977² (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 (27887354777) 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, 6116053 + ... + 6120610.

It is an arithmetic number, because the mean of its divisors is an integer number (3634289208).

Almost surely, 2^27887354977 is an apocalyptic number.

It is an amenable number.

27887354977 is a deficient number, since it is larger than the sum of its proper divisors (1186958687).

27887354977 is a wasteful number, since it uses less digits than its factorization.

27887354977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236759.

The product of its digits is 165957120, while the sum is 67.

The spelling of 27887354977 in words is "twenty-seven billion, eight hundred eighty-seven million, three hundred fifty-four thousand, nine hundred seventy-seven".