491626908608 has 56 divisors (see below), whose sum is σ = 1069663163184. Its totient is φ = 222332364800.

The previous prime is 491626908601. The next prime is 491626908613. The reversal of 491626908608 is 806809626194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491626908601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633733 + ... + 1911108.

It is an arithmetic number, because the mean of its divisors is an integer number (19101127914).

Almost surely, 2^491626908608 is an apocalyptic number.

It is an amenable number.

491626908608 is an abundant number, since it is smaller than the sum of its proper divisors (578036254576).

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

491626908608 is a wasteful number, since it uses less digits than its factorization.

491626908608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545061 (or 3545051 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 491626908608 in words is "four hundred ninety-one billion, six hundred twenty-six million, nine hundred eight thousand, six hundred eight".