27531407201 has 4 divisors (see below), whose sum is σ = 28480766100. Its totient is φ = 26582048304.

The previous prime is 27531407191. The next prime is 27531407203. The reversal of 27531407201 is 10270413572.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12512659600 + 15018747601 = 111860^2 + 122551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27531407201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27531407203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474679406 + ... + 474679463.

It is an arithmetic number, because the mean of its divisors is an integer number (7120191525).

Almost surely, 2^27531407201 is an apocalyptic number.

It is an amenable number.

27531407201 is a deficient number, since it is larger than the sum of its proper divisors (949358899).

27531407201 is an equidigital number, since it uses as much as digits as its factorization.

27531407201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949358898.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 27531407201 in words is "twenty-seven billion, five hundred thirty-one million, four hundred seven thousand, two hundred one".