261170272743 has 8 divisors (see below), whose sum is σ = 348243401088. Its totient is φ = 174105329784.

The previous prime is 261170272733. The next prime is 261170272747. The reversal of 261170272743 is 347272071162.

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

It is not a de Polignac number, because 261170272743 - 2⁶ = 261170272679 is a prime.

It is a super-2 number, since 2×261170272743² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 261170272695 and 261170272704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261170272747) 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, 1971505 + ... + 2099802.

It is an arithmetic number, because the mean of its divisors is an integer number (43530425136).

Almost surely, 2^261170272743 is an apocalyptic number.

261170272743 is a deficient number, since it is larger than the sum of its proper divisors (87073128345).

261170272743 is a wasteful number, since it uses less digits than its factorization.

261170272743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092693.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 261170272743 in words is "two hundred sixty-one billion, one hundred seventy million, two hundred seventy-two thousand, seven hundred forty-three".