782248660261 has 16 divisors (see below), whose sum is σ = 832261847040. Its totient is φ = 733134371760.

The previous prime is 782248660253. The next prime is 782248660283. The reversal of 782248660261 is 162066842287.

It is a cyclic number.

It is not a de Polignac number, because 782248660261 - 2³ = 782248660253 is a prime.

It is a super-2 number, since 2×782248660261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 782248660199 and 782248660208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782248660211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1720416 + ... + 2127046.

It is an arithmetic number, because the mean of its divisors is an integer number (52016365440).

Almost surely, 2^782248660261 is an apocalyptic number.

It is an amenable number.

782248660261 is a deficient number, since it is larger than the sum of its proper divisors (50013186779).

782248660261 is a wasteful number, since it uses less digits than its factorization.

782248660261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407736.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 782248660261 in words is "seven hundred eighty-two billion, two hundred forty-eight million, six hundred sixty thousand, two hundred sixty-one".