16648590459 has 12 divisors (see below), whose sum is σ = 22504785576. Its totient is φ = 10945762848.

The previous prime is 16648590397. The next prime is 16648590461. The reversal of 16648590459 is 95409584661.

It is not a de Polignac number, because 16648590459 - 2²⁴ = 16631813243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16648590399 and 16648590408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16648590479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1905102 + ... + 1913820.

It is an arithmetic number, because the mean of its divisors is an integer number (1875398798).

Almost surely, 2^16648590459 is an apocalyptic number.

16648590459 is a deficient number, since it is larger than the sum of its proper divisors (5856195117).

16648590459 is an frugal number, since it uses more digits than its factorization.

16648590459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17514 (or 8795 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 16648590459 in words is "sixteen billion, six hundred forty-eight million, five hundred ninety thousand, four hundred fifty-nine".