491355844716 has 24 divisors (see below), whose sum is σ = 1250723968704. Its totient is φ = 148895710480.

The previous prime is 491355844699. The next prime is 491355844801. The reversal of 491355844716 is 617448553194.

It is a super-2 number, since 2×491355844716² (a number of 24 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1861196250 + ... + 1861196513.

It is an arithmetic number, because the mean of its divisors is an integer number (52113498696).

Almost surely, 2^491355844716 is an apocalyptic number.

It is an amenable number.

491355844716 is an abundant number, since it is smaller than the sum of its proper divisors (759368123988).

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

491355844716 is a wasteful number, since it uses less digits than its factorization.

491355844716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722392781 (or 3722392779 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 491355844716 in words is "four hundred ninety-one billion, three hundred fifty-five million, eight hundred forty-four thousand, seven hundred sixteen".