491156022448 has 40 divisors (see below), whose sum is σ = 1171218210848. Its totient is φ = 194303480832.

The previous prime is 491156022431. The next prime is 491156022451. The reversal of 491156022448 is 844220651194.

It is a junction number, because it is equal to n+sod(n) for n = 491156022398 and 491156022407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168664761 + ... + 168667672.

Almost surely, 2^491156022448 is an apocalyptic number.

It is an amenable number.

491156022448 is an abundant number, since it is smaller than the sum of its proper divisors (680062188400).

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

491156022448 is a wasteful number, since it uses less digits than its factorization.

491156022448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337332461 (or 337332455 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 491156022448 in words is "four hundred ninety-one billion, one hundred fifty-six million, twenty-two thousand, four hundred forty-eight".