782331568081 has 24 divisors (see below), whose sum is σ = 911887130880. Its totient is φ = 669224428992.

The previous prime is 782331568079. The next prime is 782331568121. The reversal of 782331568081 is 180865133287.

It is a happy number.

It is not a de Polignac number, because 782331568081 - 2¹ = 782331568079 is a prime.

It is a super-2 number, since 2×782331568081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (782331568481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52255965 + ... + 52270933.

It is an arithmetic number, because the mean of its divisors is an integer number (37995297120).

Almost surely, 2^782331568081 is an apocalyptic number.

It is an amenable number.

782331568081 is a deficient number, since it is larger than the sum of its proper divisors (129555562799).

782331568081 is a wasteful number, since it uses less digits than its factorization.

782331568081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17053 (or 17046 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 782331568081 in words is "seven hundred eighty-two billion, three hundred thirty-one million, five hundred sixty-eight thousand, eighty-one".