27253645444 has 24 divisors (see below), whose sum is σ = 50122052288. Its totient is φ = 12950189280.

The previous prime is 27253645427. The next prime is 27253645493. The reversal of 27253645444 is 44454635272.

It is a super-2 number, since 2×27253645444² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27253645394 and 27253645403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2134872 + ... + 2147599.

Almost surely, 2^27253645444 is an apocalyptic number.

It is an amenable number.

27253645444 is a deficient number, since it is larger than the sum of its proper divisors (22868406844).

27253645444 is a wasteful number, since it uses less digits than its factorization.

27253645444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282555 (or 4282553 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 46.

The spelling of 27253645444 in words is "twenty-seven billion, two hundred fifty-three million, six hundred forty-five thousand, four hundred forty-four".