27491270401 has 16 divisors (see below), whose sum is σ = 33289574400. Its totient is φ = 22162613760.

The previous prime is 27491270393. The next prime is 27491270407. The reversal of 27491270401 is 10407219472.

It is not a de Polignac number, because 27491270401 - 2³ = 27491270393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27491270407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96525 + ... + 253573.

It is an arithmetic number, because the mean of its divisors is an integer number (2080598400).

Almost surely, 2^27491270401 is an apocalyptic number.

It is an amenable number.

27491270401 is a deficient number, since it is larger than the sum of its proper divisors (5798303999).

27491270401 is a wasteful number, since it uses less digits than its factorization.

27491270401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158544.

The product of its (nonzero) digits is 28224, while the sum is 37.

Adding to 27491270401 its reverse (10407219472), we get a palindrome (37898489873).

The spelling of 27491270401 in words is "twenty-seven billion, four hundred ninety-one million, two hundred seventy thousand, four hundred one".