495984204981 has 48 divisors (see below), whose sum is σ = 738014754048. Its totient is φ = 320746003200.

The previous prime is 495984204967. The next prime is 495984204997. The reversal of 495984204981 is 189402489594.

495984204981 is a `hidden beast` number, since 4 + 9 + 5 + 98 + 420 + 49 + 81 = 666.

It is not a de Polignac number, because 495984204981 - 2³¹ = 493836721333 is a prime.

It is a super-2 number, since 2×495984204981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495984204281) 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, 203187721 + ... + 203190161.

It is an arithmetic number, because the mean of its divisors is an integer number (15375307376).

Almost surely, 2^495984204981 is an apocalyptic number.

It is an amenable number.

495984204981 is a deficient number, since it is larger than the sum of its proper divisors (242030549067).

495984204981 is a wasteful number, since it uses less digits than its factorization.

495984204981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 4079 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 495984204981 in words is "four hundred ninety-five billion, nine hundred eighty-four million, two hundred four thousand, nine hundred eighty-one".