261235414066 has 8 divisors (see below), whose sum is σ = 427476132144. Its totient is φ = 118743370020.

The previous prime is 261235414049. The next prime is 261235414073. The reversal of 261235414066 is 660414532162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5937168480 + ... + 5937168523.

It is an arithmetic number, because the mean of its divisors is an integer number (53434516518).

Almost surely, 2^261235414066 is an apocalyptic number.

261235414066 is a deficient number, since it is larger than the sum of its proper divisors (166240718078).

261235414066 is a wasteful number, since it uses less digits than its factorization.

261235414066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11874337016.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 261235414066 in words is "two hundred sixty-one billion, two hundred thirty-five million, four hundred fourteen thousand, sixty-six".