491071810282976 has 192 divisors, whose sum is σ = 1050958841042880. Its totient is φ = 225863295989760.

The previous prime is 491071810282967. The next prime is 491071810282987. The reversal of 491071810282976 is 679282018170194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86869236566 + ... + 86869242218.

It is an arithmetic number, because the mean of its divisors is an integer number (5473743963765).

Almost surely, 2^{491071810282976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491071810282976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525479420521440).

491071810282976 is an abundant number, since it is smaller than the sum of its proper divisors (559887030759904).

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

491071810282976 is a wasteful number, since it uses less digits than its factorization.

491071810282976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9766 (or 9732 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 65.

The spelling of 491071810282976 in words is "four hundred ninety-one trillion, seventy-one billion, eight hundred ten million, two hundred eighty-two thousand, nine hundred seventy-six".