261543741713022 has 16 divisors (see below), whose sum is σ = 523270958550912. Its totient is φ = 87150668050200.

The previous prime is 261543741712997. The next prime is 261543741713029. The reversal of 261543741713022 is 220317147345162.

It is a super-4 number, since 4×261543741713022⁴ (a number of 59 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261543741713029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7644778338 + ... + 7644812549.

It is an arithmetic number, because the mean of its divisors is an integer number (32704434909432).

Almost surely, 2^{261543741713022} is an apocalyptic number.

261543741713022 is an abundant number, since it is smaller than the sum of its proper divisors (261727216837890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261543741713022 is a wasteful number, since it uses less digits than its factorization.

261543741713022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15289593743.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 261543741713022 in words is "two hundred sixty-one trillion, five hundred forty-three billion, seven hundred forty-one million, seven hundred thirteen thousand, twenty-two".