261446005411 has 16 divisors (see below), whose sum is σ = 267450193440. Its totient is φ = 255529964800.

The previous prime is 261446005409. The next prime is 261446005493. The reversal of 261446005411 is 114500644162.

It is a cyclic number.

It is not a de Polignac number, because 261446005411 - 2¹ = 261446005409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261446005111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424045 + ... + 2529601.

It is an arithmetic number, because the mean of its divisors is an integer number (16715637090).

Almost surely, 2^261446005411 is an apocalyptic number.

261446005411 is a deficient number, since it is larger than the sum of its proper divisors (6004188029).

261446005411 is a wasteful number, since it uses less digits than its factorization.

261446005411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105974.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 261446005411 its reverse (114500644162), we get a palindrome (375946649573).

The spelling of 261446005411 in words is "two hundred sixty-one billion, four hundred forty-six million, five thousand, four hundred eleven".