16503168497 has 8 divisors (see below), whose sum is σ = 17009528232. Its totient is φ = 15999984000.

The previous prime is 16503168467. The next prime is 16503168527. The reversal of 16503168497 is 79486130561.

It is an interprime number because it is at equal distance from previous prime (16503168467) and next prime (16503168527).

It can be written as a sum of positive squares in 4 ways, for example, as 8829233296 + 7673935201 = 93964^2 + 87601^2 .

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

It is not a de Polignac number, because 16503168497 - 2¹⁸ = 16502906353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16503168427) 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, 783254 + ... + 804047.

It is an arithmetic number, because the mean of its divisors is an integer number (2126191029).

Almost surely, 2^16503168497 is an apocalyptic number.

It is an amenable number.

16503168497 is a deficient number, since it is larger than the sum of its proper divisors (506359735).

16503168497 is a wasteful number, since it uses less digits than its factorization.

16503168497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587619.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 16503168497 in words is "sixteen billion, five hundred three million, one hundred sixty-eight thousand, four hundred ninety-seven".