491008192416 has 480 divisors, whose sum is σ = 1765533635712. Its totient is φ = 130666659840.

The previous prime is 491008192403. The next prime is 491008192429. The reversal of 491008192416 is 614291800194.

It is a happy number.

491008192416 is a `hidden beast` number, since 49 + 1 + 0 + 0 + 8 + 192 + 416 = 666.

It is an interprime number because it is at equal distance from previous prime (491008192403) and next prime (491008192429).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29911251 + ... + 29927661.

Almost surely, 2^491008192416 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 491008192416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882766817856).

491008192416 is an abundant number, since it is smaller than the sum of its proper divisors (1274525443296).

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

491008192416 is a wasteful number, since it uses less digits than its factorization.

491008192416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16554 (or 16537 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 491008192416 in words is "four hundred ninety-one billion, eight million, one hundred ninety-two thousand, four hundred sixteen".