261600162063211 has 16 divisors (see below), whose sum is σ = 271380151569600. Its totient is φ = 251870820587008.

The previous prime is 261600162063203. The next prime is 261600162063239. The reversal of 261600162063211 is 112360261006162.

It is a cyclic number.

It is not a de Polignac number, because 261600162063211 - 2³ = 261600162063203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261600112063211) 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, 579385935 + ... + 579837271.

It is an arithmetic number, because the mean of its divisors is an integer number (16961259473100).

Almost surely, 2^{261600162063211} is an apocalyptic number.

261600162063211 is a deficient number, since it is larger than the sum of its proper divisors (9779989506389).

261600162063211 is a wasteful number, since it uses less digits than its factorization.

261600162063211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507398.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 261600162063211 in words is "two hundred sixty-one trillion, six hundred billion, one hundred sixty-two million, sixty-three thousand, two hundred eleven".