491569314120 has 96 divisors (see below), whose sum is σ = 1599410592000. Its totient is φ = 130936611456.

The previous prime is 491569314053. The next prime is 491569314121. The reversal of 491569314120 is 21413965194.

491569314120 is a `hidden beast` number, since 49 + 1 + 569 + 3 + 1 + 41 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (491569314121) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 455320 + ... + 1091079.

It is an arithmetic number, because the mean of its divisors is an integer number (16660527000).

Almost surely, 2^491569314120 is an apocalyptic number.

491569314120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491569314120 is an abundant number, since it is smaller than the sum of its proper divisors (1107841277880).

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

491569314120 is a wasteful number, since it uses less digits than its factorization.

491569314120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547299 (or 1547292 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 491569314120 in words is "four hundred ninety-one billion, five hundred sixty-nine million, three hundred fourteen thousand, one hundred twenty".