27472952261 has 2 divisors, whose sum is σ = 27472952262. Its totient is φ = 27472952260.

The previous prime is 27472952239. The next prime is 27472952263. The reversal of 27472952261 is 16225927472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25822561636 + 1650390625 = 160694^2 + 40625^2 .

It is a cyclic number.

It is not a de Polignac number, because 27472952261 - 2¹⁰ = 27472951237 is a prime.

It is a super-3 number, since 3×27472952261³ (a number of 32 digits) contains 333 as substring.

Together with 27472952263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27472952263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13736476130 + 13736476131.

It is an arithmetic number, because the mean of its divisors is an integer number (13736476131).

Almost surely, 2^27472952261 is an apocalyptic number.

It is an amenable number.

27472952261 is a deficient number, since it is larger than the sum of its proper divisors (1).

27472952261 is an equidigital number, since it uses as much as digits as its factorization.

27472952261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The spelling of 27472952261 in words is "twenty-seven billion, four hundred seventy-two million, nine hundred fifty-two thousand, two hundred sixty-one".