261000727350042 has 16 divisors (see below), whose sum is σ = 522623625693120. Its totient is φ = 86896547284512.

The previous prime is 261000727350019. The next prime is 261000727350047. The reversal of 261000727350042 is 240053727000162.

It is a super-3 number, since 3×261000727350042³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (261000727350047) 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, 25923785923 + ... + 25923795990.

It is an arithmetic number, because the mean of its divisors is an integer number (32663976605820).

Almost surely, 2^{261000727350042} is an apocalyptic number.

261000727350042 is an abundant number, since it is smaller than the sum of its proper divisors (261622898343078).

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

261000727350042 is a wasteful number, since it uses less digits than its factorization.

261000727350042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51847582757.

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 261000727350042 in words is "two hundred sixty-one trillion, seven hundred twenty-seven million, three hundred fifty thousand, forty-two".