260401780856 has 16 divisors (see below), whose sum is σ = 558003816240. Its totient is φ = 111600763200.

The previous prime is 260401780829. The next prime is 260401780879. The reversal of 260401780856 is 658087104062.

260401780856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×260401780856³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260401780856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325015845 + ... + 2325015956.

It is an arithmetic number, because the mean of its divisors is an integer number (34875238515).

Almost surely, 2^260401780856 is an apocalyptic number.

It is an amenable number.

260401780856 is an abundant number, since it is smaller than the sum of its proper divisors (297602035384).

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

260401780856 is a wasteful number, since it uses less digits than its factorization.

260401780856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650031814 (or 4650031810 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 260401780856 in words is "two hundred sixty billion, four hundred one million, seven hundred eighty thousand, eight hundred fifty-six".