16500532613 has 2 divisors, whose sum is σ = 16500532614. Its totient is φ = 16500532612.

The previous prime is 16500532591. The next prime is 16500532621. The reversal of 16500532613 is 31623500561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14985921889 + 1514610724 = 122417^2 + 38918^2 .

It is a cyclic number.

It is not a de Polignac number, because 16500532613 - 2¹⁴ = 16500516229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16500532613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16500532813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250266306 + 8250266307.

It is an arithmetic number, because the mean of its divisors is an integer number (8250266307).

Almost surely, 2^16500532613 is an apocalyptic number.

It is an amenable number.

16500532613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16500532613 is an equidigital number, since it uses as much as digits as its factorization.

16500532613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 16500532613 in words is "sixteen billion, five hundred million, five hundred thirty-two thousand, six hundred thirteen".