497445523809 has 32 divisors (see below), whose sum is σ = 722860830720. Its totient is φ = 302458266432.

The previous prime is 497445523787. The next prime is 497445523811. The reversal of 497445523809 is 908325544794.

It is a happy number.

It is not a de Polignac number, because 497445523809 - 2¹⁹ = 497444999521 is a prime.

It is a super-2 number, since 2×497445523809² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (497445523909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424304 + ... + 1738830.

It is an arithmetic number, because the mean of its divisors is an integer number (22589400960).

Almost surely, 2^497445523809 is an apocalyptic number.

It is an amenable number.

497445523809 is a deficient number, since it is larger than the sum of its proper divisors (225415306911).

497445523809 is a wasteful number, since it uses less digits than its factorization.

497445523809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315029.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 497445523809 in words is "four hundred ninety-seven billion, four hundred forty-five million, five hundred twenty-three thousand, eight hundred nine".