497673786917 has 4 divisors (see below), whose sum is σ = 502505571360. Its totient is φ = 492842002476.

The previous prime is 497673786901. The next prime is 497673786941. The reversal of 497673786917 is 719687376794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 719687376794 = 2 ⋅359843688397.

It is a cyclic number.

It is not a de Polignac number, because 497673786917 - 2⁴ = 497673786901 is a prime.

It is a super-3 number, since 3×497673786917³ (a number of 36 digits) contains 333 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 (497673786977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2415892067 + ... + 2415892272.

It is an arithmetic number, because the mean of its divisors is an integer number (125626392840).

Almost surely, 2^497673786917 is an apocalyptic number.

It is an amenable number.

497673786917 is a deficient number, since it is larger than the sum of its proper divisors (4831784443).

497673786917 is a wasteful number, since it uses less digits than its factorization.

497673786917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831784442.

The product of its digits is 672126336, while the sum is 74.

The spelling of 497673786917 in words is "four hundred ninety-seven billion, six hundred seventy-three million, seven hundred eighty-six thousand, nine hundred seventeen".