261334474227 has 32 divisors (see below), whose sum is σ = 409981435200. Its totient is φ = 163956570624.

The previous prime is 261334474217. The next prime is 261334474241. The reversal of 261334474227 is 722474433162.

261334474227 is a `hidden beast` number, since 2 + 6 + 13 + 344 + 74 + 227 = 666.

It is not a de Polignac number, because 261334474227 - 2²³ = 261326085619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261334474207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5054953 + ... + 5106389.

It is an arithmetic number, because the mean of its divisors is an integer number (12811919850).

Almost surely, 2^261334474227 is an apocalyptic number.

261334474227 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

261334474227 is a deficient number, since it is larger than the sum of its proper divisors (148646960973).

261334474227 is a wasteful number, since it uses less digits than its factorization.

261334474227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62532 (or 62526 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 45.

The spelling of 261334474227 in words is "two hundred sixty-one billion, three hundred thirty-four million, four hundred seventy-four thousand, two hundred twenty-seven".