495017398973 has 4 divisors (see below), whose sum is σ = 495022849788. Its totient is φ = 495011948160.

The previous prime is 495017398957. The next prime is 495017399057. The reversal of 495017398973 is 379893710594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 438771110404 + 56246288569 = 662398^2 + 237163^2 .

It is a cyclic number.

It is not a de Polignac number, because 495017398973 - 2⁴ = 495017398957 is a prime.

It is a super-2 number, since 2×495017398973² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495017398273) 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 3 ways as a sum of consecutive naturals, for example, 2586836 + ... + 2771597.

It is an arithmetic number, because the mean of its divisors is an integer number (123755712447).

Almost surely, 2^495017398973 is an apocalyptic number.

It is an amenable number.

495017398973 is a deficient number, since it is larger than the sum of its proper divisors (5450815).

495017398973 is an equidigital number, since it uses as much as digits as its factorization.

495017398973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450814.

The product of its (nonzero) digits is 51438240, while the sum is 65.

The spelling of 495017398973 in words is "four hundred ninety-five billion, seventeen million, three hundred ninety-eight thousand, nine hundred seventy-three".