491481389204 has 48 divisors (see below), whose sum is σ = 931356014400. Its totient is φ = 225590148096.

The previous prime is 491481389197. The next prime is 491481389213. The reversal of 491481389204 is 402983184194.

It is a congruent number.

It is an unprimeable number.

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, 10943507 + ... + 10988325.

It is an arithmetic number, because the mean of its divisors is an integer number (19403250300).

Almost surely, 2^491481389204 is an apocalyptic number.

It is an amenable number.

491481389204 is a deficient number, since it is larger than the sum of its proper divisors (439874625196).

491481389204 is a wasteful number, since it uses less digits than its factorization.

491481389204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45992 (or 45990 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 491481389204 in words is "four hundred ninety-one billion, four hundred eighty-one million, three hundred eighty-nine thousand, two hundred four".