491976617746 has 8 divisors (see below), whose sum is σ = 738072162864. Its totient is φ = 245952563460.

The previous prime is 491976617711. The next prime is 491976617771. The reversal of 491976617746 is 647716679194.

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

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 3 ways as a sum of consecutive naturals, for example, 17855500 + ... + 17883031.

It is an arithmetic number, because the mean of its divisors is an integer number (92259020358).

Almost surely, 2^491976617746 is an apocalyptic number.

491976617746 is a deficient number, since it is larger than the sum of its proper divisors (246095545118).

491976617746 is a wasteful number, since it uses less digits than its factorization.

491976617746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35745416.

The product of its digits is 96018048, while the sum is 67.

The spelling of 491976617746 in words is "four hundred ninety-one billion, nine hundred seventy-six million, six hundred seventeen thousand, seven hundred forty-six".