260390256129078 has 8 divisors (see below), whose sum is σ = 520780512258168. Its totient is φ = 86796752043024.

The previous prime is 260390256129041. The next prime is 260390256129083. The reversal of 260390256129078 is 870921652093062.

260390256129078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

260390256129078 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21699188010751 + ... + 21699188010762.

It is an arithmetic number, because the mean of its divisors is an integer number (65097564032271).

Almost surely, 2^{260390256129078} is an apocalyptic number.

260390256129078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

260390256129078 is a wasteful number, since it uses less digits than its factorization.

260390256129078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43398376021518.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 260390256129078 in words is "two hundred sixty trillion, three hundred ninety billion, two hundred fifty-six million, one hundred twenty-nine thousand, seventy-eight".