27509457463 has 4 divisors (see below), whose sum is σ = 27509930208. Its totient is φ = 27508984720.

The previous prime is 27509457407. The next prime is 27509457473. The reversal of 27509457463 is 36475490572.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27509457463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27509457463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27509457473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134431 + ... + 270352.

It is an arithmetic number, because the mean of its divisors is an integer number (6877482552).

Almost surely, 2^27509457463 is an apocalyptic number.

27509457463 is a deficient number, since it is larger than the sum of its proper divisors (472745).

27509457463 is an equidigital number, since it uses as much as digits as its factorization.

27509457463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472744.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 27509457463 in words is "twenty-seven billion, five hundred nine million, four hundred fifty-seven thousand, four hundred sixty-three".