261052335005 has 64 divisors (see below), whose sum is σ = 399989145600. Its totient is φ = 158812254720.

The previous prime is 261052334999. The next prime is 261052335031. The reversal of 261052335005 is 500533250162.

It is not a de Polignac number, because 261052335005 - 2⁴ = 261052334989 is a prime.

It is a super-2 number, since 2×261052335005² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 21167681 + ... + 21180009.

It is an arithmetic number, because the mean of its divisors is an integer number (6249830400).

Almost surely, 2^261052335005 is an apocalyptic number.

It is an amenable number.

261052335005 is a deficient number, since it is larger than the sum of its proper divisors (138936810595).

261052335005 is a wasteful number, since it uses less digits than its factorization.

261052335005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13674.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 261052335005 its reverse (500533250162), we get a palindrome (761585585167).

The spelling of 261052335005 in words is "two hundred sixty-one billion, fifty-two million, three hundred thirty-five thousand, five".