16615600537 has 2 divisors, whose sum is σ = 16615600538. Its totient is φ = 16615600536.

The previous prime is 16615600517. The next prime is 16615600577. The reversal of 16615600537 is 73500651661.

It is an a-pointer prime, because the next prime (16615600577) can be obtained adding 16615600537 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16219550736 + 396049801 = 127356^2 + 19901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16615600537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16615600537.

It is not a weakly prime, because it can be changed into another prime (16615600517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307800268 + 8307800269.

It is an arithmetic number, because the mean of its divisors is an integer number (8307800269).

Almost surely, 2^16615600537 is an apocalyptic number.

It is an amenable number.

16615600537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16615600537 is an equidigital number, since it uses as much as digits as its factorization.

16615600537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 16615600537 in words is "sixteen billion, six hundred fifteen million, six hundred thousand, five hundred thirty-seven".