491020524885 has 16 divisors (see below), whose sum is σ = 857054007360. Its totient is φ = 238070557440.

The previous prime is 491020524871. The next prime is 491020524941. The reversal of 491020524885 is 588425020194.

It is not a de Polignac number, because 491020524885 - 2⁵ = 491020524853 is a prime.

It is a super-2 number, since 2×491020524885² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 1487940820 + ... + 1487941149.

It is an arithmetic number, because the mean of its divisors is an integer number (53565875460).

Almost surely, 2^491020524885 is an apocalyptic number.

It is an amenable number.

491020524885 is a deficient number, since it is larger than the sum of its proper divisors (366033482475).

491020524885 is a wasteful number, since it uses less digits than its factorization.

491020524885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975881988.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 491020524885 in words is "four hundred ninety-one billion, twenty million, five hundred twenty-four thousand, eight hundred eighty-five".