261144414 has 24 divisors (see below), whose sum is σ = 571105080. Its totient is φ = 86233968.

The previous prime is 261144407. The next prime is 261144421. The reversal of 261144414 is 414441162.

261144414 is a `hidden beast` number, since 2 + 611 + 4 + 4 + 41 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (261144407) and next prime (261144421).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65869 + ... + 69720.

It is an arithmetic number, because the mean of its divisors is an integer number (23796045).

Almost surely, 2^261144414 is an apocalyptic number.

261144414 is an abundant number, since it is smaller than the sum of its proper divisors (309960666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261144414 is a wasteful number, since it uses less digits than its factorization.

261144414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135704 (or 135701 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 261144414 is about 16159.9633044138. The cubic root of 261144414 is about 639.1854986886.

Adding to 261144414 its reverse (414441162), we get a palindrome (675585576).

The spelling of 261144414 in words is "two hundred sixty-one million, one hundred forty-four thousand, four hundred fourteen".