261571450730043 has 8 divisors (see below), whose sum is σ = 348891441162768. Its totient is φ = 174316213725344.

The previous prime is 261571450729991. The next prime is 261571450730221. The reversal of 261571450730043 is 340037054175162.

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 261571450730043 - 2¹⁷ = 261571450598971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261571450729974 and 261571450730001.

It is not an unprimeable number, because it can be changed into a prime (261571450730543) 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, 16188347580 + ... + 16188363737.

It is an arithmetic number, because the mean of its divisors is an integer number (43611430145346).

Almost surely, 2^{261571450730043} is an apocalyptic number.

261571450730043 is a deficient number, since it is larger than the sum of its proper divisors (87319990432725).

261571450730043 is a wasteful number, since it uses less digits than its factorization.

261571450730043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32376714013.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 261571450730043 in words is "two hundred sixty-one trillion, five hundred seventy-one billion, four hundred fifty million, seven hundred thirty thousand, forty-three".