42364640261 has 16 divisors (see below), whose sum is σ = 43212873600. Its totient is φ = 41526883008.

The previous prime is 42364640173. The next prime is 42364640267. The reversal of 42364640261 is 16204646324.

It is a cyclic number.

It is not a de Polignac number, because 42364640261 - 2¹⁰ = 42364639237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42364640267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4345130 + ... + 4354868.

It is an arithmetic number, because the mean of its divisors is an integer number (2700804600).

Almost surely, 2^42364640261 is an apocalyptic number.

It is an amenable number.

42364640261 is a deficient number, since it is larger than the sum of its proper divisors (848233339).

42364640261 is a wasteful number, since it uses less digits than its factorization.

42364640261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10268.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 42364640261 in words is "forty-two billion, three hundred sixty-four million, six hundred forty thousand, two hundred sixty-one".