497138997847 has 8 divisors (see below), whose sum is σ = 537447566000. Its totient is φ = 458244765504.

The previous prime is 497138997821. The next prime is 497138997917. The reversal of 497138997847 is 748799831794.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497138997847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497138997347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353583222 + ... + 353584627.

It is an arithmetic number, because the mean of its divisors is an integer number (67180945750).

Almost surely, 2^497138997847 is an apocalyptic number.

497138997847 is a deficient number, since it is larger than the sum of its proper divisors (40308568153).

497138997847 is a wasteful number, since it uses less digits than its factorization.

497138997847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707167905.

The product of its digits is 768144384, while the sum is 76.

The spelling of 497138997847 in words is "four hundred ninety-seven billion, one hundred thirty-eight million, nine hundred ninety-seven thousand, eight hundred forty-seven".