798040661517 has 12 divisors (see below), whose sum is σ = 1257518618304. Its totient is φ = 483661006920.

The previous prime is 798040661479. The next prime is 798040661543. The reversal of 798040661517 is 715166040897.

798040661517 is a `hidden beast` number, since 7 + 9 + 8 + 0 + 4 + 0 + 6 + 615 + 17 = 666.

It is not a de Polignac number, because 798040661517 - 2¹⁴ = 798040645133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798040661567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4030508293 + ... + 4030508490.

It is an arithmetic number, because the mean of its divisors is an integer number (104793218192).

Almost surely, 2^798040661517 is an apocalyptic number.

It is an amenable number.

798040661517 is a deficient number, since it is larger than the sum of its proper divisors (459477956787).

798040661517 is a wasteful number, since it uses less digits than its factorization.

798040661517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061016800 (or 8061016797 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 798040661517 in words is "seven hundred ninety-eight billion, forty million, six hundred sixty-one thousand, five hundred seventeen".