491202765468 has 18 divisors (see below), whose sum is σ = 1241651435024. Its totient is φ = 163734255144.

The previous prime is 491202765467. The next prime is 491202765479. The reversal of 491202765468 is 864567202194.

491202765468 is a `hidden beast` number, since 4 + 9 + 1 + 20 + 2 + 76 + 546 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×491202765468² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491202765463) 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 5 ways as a sum of consecutive naturals, for example, 6822260596 + ... + 6822260667.

Almost surely, 2^491202765468 is an apocalyptic number.

It is an amenable number.

491202765468 is an abundant number, since it is smaller than the sum of its proper divisors (750448669556).

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

491202765468 is a wasteful number, since it uses less digits than its factorization.

491202765468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13644521273 (or 13644521268 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 491202765468 in words is "four hundred ninety-one billion, two hundred two million, seven hundred sixty-five thousand, four hundred sixty-eight".