27781675548 has 48 divisors (see below), whose sum is σ = 73155519360. Its totient is φ = 8128388800.

The previous prime is 27781675543. The next prime is 27781675549. The reversal of 27781675548 is 84557618772.

It is a super-2 number, since 2×27781675548² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27781675491 and 27781675500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27781675543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624918 + ... + 3632573.

It is an arithmetic number, because the mean of its divisors is an integer number (1524073320).

Almost surely, 2^27781675548 is an apocalyptic number.

It is an amenable number.

27781675548 is an abundant number, since it is smaller than the sum of its proper divisors (45373843812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27781675548 is a wasteful number, since it uses less digits than its factorization.

27781675548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257538 (or 7257536 counting only the distinct ones).

The product of its digits is 26342400, while the sum is 60.

The spelling of 27781675548 in words is "twenty-seven billion, seven hundred eighty-one million, six hundred seventy-five thousand, five hundred forty-eight".