491952495102 has 16 divisors (see below), whose sum is σ = 990508381200. Its totient is φ = 162883599872.

The previous prime is 491952495101. The next prime is 491952495119. The reversal of 491952495102 is 201594259194.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491952495101) 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 7 ways as a sum of consecutive naturals, for example, 275140323 + ... + 275142110.

It is an arithmetic number, because the mean of its divisors is an integer number (61906773825).

Almost surely, 2^491952495102 is an apocalyptic number.

491952495102 is an abundant number, since it is smaller than the sum of its proper divisors (498555886098).

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

491952495102 is a wasteful number, since it uses less digits than its factorization.

491952495102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550282587.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 491952495102 in words is "four hundred ninety-one billion, nine hundred fifty-two million, four hundred ninety-five thousand, one hundred two".