495743835681 has 32 divisors (see below), whose sum is σ = 748404576000. Its totient is φ = 324211590144.

The previous prime is 495743835679. The next prime is 495743835701. The reversal of 495743835681 is 186538347594.

495743835681 is a `hidden beast` number, since 4 + 9 + 574 + 3 + 8 + 3 + 56 + 8 + 1 = 666.

It is not a de Polignac number, because 495743835681 - 2¹ = 495743835679 is a prime.

It is a super-2 number, since 2×495743835681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (495743835661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11252865 + ... + 11296833.

It is an arithmetic number, because the mean of its divisors is an integer number (23387643000).

Almost surely, 2^495743835681 is an apocalyptic number.

It is an amenable number.

495743835681 is a deficient number, since it is larger than the sum of its proper divisors (252660740319).

495743835681 is a wasteful number, since it uses less digits than its factorization.

495743835681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51910 (or 51904 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 495743835681 in words is "four hundred ninety-five billion, seven hundred forty-three million, eight hundred thirty-five thousand, six hundred eighty-one".