491316077616 has 480 divisors, whose sum is σ = 1662342269952. Its totient is φ = 121535631360.

The previous prime is 491316077591. The next prime is 491316077627. The reversal of 491316077616 is 616770613194.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 282202506 + ... + 282204246.

Almost surely, 2^491316077616 is an apocalyptic number.

491316077616 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491316077616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831171134976).

491316077616 is an abundant number, since it is smaller than the sum of its proper divisors (1171026192336).

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

491316077616 is a wasteful number, since it uses less digits than its factorization.

491316077616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 491316077616 in words is "four hundred ninety-one billion, three hundred sixteen million, seventy-seven thousand, six hundred sixteen".