261347310364 has 12 divisors (see below), whose sum is σ = 522694620784. Its totient is φ = 112005990144.

The previous prime is 261347310347. The next prime is 261347310403. The reversal of 261347310364 is 463013743162.

261347310364 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4666916229 + ... + 4666916284.

Almost surely, 2^261347310364 is an apocalyptic number.

It is an amenable number.

261347310364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

261347310364 is a wasteful number, since it uses less digits than its factorization.

261347310364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333832524 (or 9333832522 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 261347310364 in words is "two hundred sixty-one billion, three hundred forty-seven million, three hundred ten thousand, three hundred sixty-four".