491911708498 has 8 divisors (see below), whose sum is σ = 843277214592. Its totient is φ = 210819303636.

The previous prime is 491911708481. The next prime is 491911708559. The reversal of 491911708498 is 894807119194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17568275290 + ... + 17568275317.

It is an arithmetic number, because the mean of its divisors is an integer number (105409651824).

Almost surely, 2^491911708498 is an apocalyptic number.

491911708498 is a deficient number, since it is larger than the sum of its proper divisors (351365506094).

491911708498 is a wasteful number, since it uses less digits than its factorization.

491911708498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35136550616.

The product of its (nonzero) digits is 5225472, while the sum is 61.

The spelling of 491911708498 in words is "four hundred ninety-one billion, nine hundred eleven million, seven hundred eight thousand, four hundred ninety-eight".