27726271261 has 32 divisors (see below), whose sum is σ = 32083430400. Its totient is φ = 23732766720.

The previous prime is 27726271231. The next prime is 27726271283. The reversal of 27726271261 is 16217262772.

It is not a de Polignac number, because 27726271261 - 2¹³ = 27726263069 is a prime.

It is a super-2 number, since 2×27726271261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726271231) 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 31 ways as a sum of consecutive naturals, for example, 9932776 + ... + 9935566.

It is an arithmetic number, because the mean of its divisors is an integer number (1002607200).

Almost surely, 2^27726271261 is an apocalyptic number.

It is an amenable number.

27726271261 is a deficient number, since it is larger than the sum of its proper divisors (4357159139).

27726271261 is a wasteful number, since it uses less digits than its factorization.

27726271261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its digits is 197568, while the sum is 43.

The spelling of 27726271261 in words is "twenty-seven billion, seven hundred twenty-six million, two hundred seventy-one thousand, two hundred sixty-one".