491629195056 has 80 divisors (see below), whose sum is σ = 1313997372000. Its totient is φ = 158206132224.

The previous prime is 491629195037. The next prime is 491629195063. The reversal of 491629195056 is 650591926194.

It is a junction number, because it is equal to n+sod(n) for n = 491629194987 and 491629195005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15224880 + ... + 15257136.

It is an arithmetic number, because the mean of its divisors is an integer number (16424967150).

Almost surely, 2^491629195056 is an apocalyptic number.

It is an amenable number.

491629195056 is an abundant number, since it is smaller than the sum of its proper divisors (822368176944).

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

491629195056 is a wasteful number, since it uses less digits than its factorization.

491629195056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43246 (or 43240 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 57.

The spelling of 491629195056 in words is "four hundred ninety-one billion, six hundred twenty-nine million, one hundred ninety-five thousand, fifty-six".