261013634061253 has 8 divisors (see below), whose sum is σ = 263785391625600. Its totient is φ = 258246446585808.

The previous prime is 261013634061211. The next prime is 261013634061281. The reversal of 261013634061253 is 352160436310162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261013634061253 - 2²¹ = 261013631964101 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 (261013634061283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142407393 + ... + 1142635846.

It is an arithmetic number, because the mean of its divisors is an integer number (32973173953200).

Almost surely, 2^{261013634061253} is an apocalyptic number.

It is an amenable number.

261013634061253 is a deficient number, since it is larger than the sum of its proper divisors (2771757564347).

261013634061253 is a wasteful number, since it uses less digits than its factorization.

261013634061253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285044451.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 261013634061253 in words is "two hundred sixty-one trillion, thirteen billion, six hundred thirty-four million, sixty-one thousand, two hundred fifty-three".