497365479521 has 4 divisors (see below), whose sum is σ = 526622272452. Its totient is φ = 468108686592.

The previous prime is 497365479503. The next prime is 497365479539. The reversal of 497365479521 is 125974563794.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (497365479503) and next prime (497365479539).

It can be written as a sum of positive squares in 2 ways, for example, as 455808618496 + 41556861025 = 675136^2 + 203855^2 .

It is a cyclic number.

It is not a de Polignac number, because 497365479521 - 2¹⁴ = 497365463137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497365479551) 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, 14628396440 + ... + 14628396473.

It is an arithmetic number, because the mean of its divisors is an integer number (131655568113).

Almost surely, 2^497365479521 is an apocalyptic number.

It is an amenable number.

497365479521 is a deficient number, since it is larger than the sum of its proper divisors (29256792931).

497365479521 is a wasteful number, since it uses less digits than its factorization.

497365479521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29256792930.

The product of its digits is 57153600, while the sum is 62.

The spelling of 497365479521 in words is "four hundred ninety-seven billion, three hundred sixty-five million, four hundred seventy-nine thousand, five hundred twenty-one".