260971783132878 has 160 divisors (see below), whose sum is σ = 614902949004960. Its totient is φ = 82607112887040.

The previous prime is 260971783132877. The next prime is 260971783132919. The reversal of 260971783132878 is 878231387179062.

260971783132878 is a `hidden beast` number, since 2 + 60 + 9 + 7 + 178 + 3 + 1 + 328 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260971783132877) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4260524500 + ... + 4260585752.

It is an arithmetic number, because the mean of its divisors is an integer number (3843143431281).

Almost surely, 2^{260971783132878} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260971783132878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307451474502480).

260971783132878 is an abundant number, since it is smaller than the sum of its proper divisors (353931165872082).

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

260971783132878 is a wasteful number, since it uses less digits than its factorization.

260971783132878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76224 (or 76215 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 72.

The spelling of 260971783132878 in words is "two hundred sixty trillion, nine hundred seventy-one billion, seven hundred eighty-three million, one hundred thirty-two thousand, eight hundred seventy-eight".