261646201116026 has 8 divisors (see below), whose sum is σ = 392469373804800. Its totient is φ = 130823076514428.

The previous prime is 261646201116007. The next prime is 261646201116077. The reversal of 261646201116026 is 620611102646162.

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 (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8779175 + ... + 24502373.

It is an arithmetic number, because the mean of its divisors is an integer number (49058671725600).

Almost surely, 2^{261646201116026} is an apocalyptic number.

261646201116026 is a deficient number, since it is larger than the sum of its proper divisors (130823172688774).

261646201116026 is a wasteful number, since it uses less digits than its factorization.

261646201116026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24043588.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 261646201116026 in words is "two hundred sixty-one trillion, six hundred forty-six billion, two hundred one million, one hundred sixteen thousand, twenty-six".