27440819253 has 8 divisors (see below), whose sum is σ = 40653065600. Its totient is φ = 18293879484.

The previous prime is 27440819249. The next prime is 27440819269. The reversal of 27440819253 is 35291804472.

27440819253 is a `hidden beast` number, since 2 + 7 + 4 + 408 + 192 + 53 = 666.

It is not a de Polignac number, because 27440819253 - 2² = 27440819249 is a prime.

It is a super-2 number, since 2×27440819253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27440819199 and 27440819208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27440819233) 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, 508163293 + ... + 508163346.

It is an arithmetic number, because the mean of its divisors is an integer number (5081633200).

Almost surely, 2^27440819253 is an apocalyptic number.

It is an amenable number.

27440819253 is a deficient number, since it is larger than the sum of its proper divisors (13212246347).

27440819253 is a wasteful number, since it uses less digits than its factorization.

27440819253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016326648 (or 1016326642 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 27440819253 in words is "twenty-seven billion, four hundred forty million, eight hundred nineteen thousand, two hundred fifty-three".