4891005664497 has 48 divisors (see below), whose sum is σ = 7676903931840. Its totient is φ = 2990516143104.

The previous prime is 4891005664481. The next prime is 4891005664511. The reversal of 4891005664497 is 7944665001984.

4891005664497 is a `hidden beast` number, since 4 + 8 + 91 + 0 + 0 + 56 + 6 + 4 + 497 = 666.

It is not a de Polignac number, because 4891005664497 - 2⁴ = 4891005664481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4891005664297) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2112348 + ... + 3774125.

It is an arithmetic number, because the mean of its divisors is an integer number (159935498580).

Almost surely, 2^{4891005664497} is an apocalyptic number.

It is an amenable number.

4891005664497 is a deficient number, since it is larger than the sum of its proper divisors (2785898267343).

4891005664497 is a wasteful number, since it uses less digits than its factorization.

4891005664497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886654 (or 5886651 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 4891005664497 in words is "four trillion, eight hundred ninety-one billion, five million, six hundred sixty-four thousand, four hundred ninety-seven".