215204000497 has 4 divisors (see below), whose sum is σ = 215463596020. Its totient is φ = 214944404976.

The previous prime is 215204000477. The next prime is 215204000509. The reversal of 215204000497 is 794000402512.

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 167316993936 + 47887006561 = 409044^2 + 218831^2 .

It is a cyclic number.

It is not a de Polignac number, because 215204000497 - 2¹⁹ = 215203476209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215204000437) 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, 129796518 + ... + 129798175.

It is an arithmetic number, because the mean of its divisors is an integer number (53865899005).

Almost surely, 2^215204000497 is an apocalyptic number.

It is an amenable number.

215204000497 is a deficient number, since it is larger than the sum of its proper divisors (259595523).

215204000497 is an equidigital number, since it uses as much as digits as its factorization.

215204000497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259595522.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 215204000497 in words is "two hundred fifteen billion, two hundred four million, four hundred ninety-seven", and thus it is an aban number.