16005061537 has 2 divisors, whose sum is σ = 16005061538. Its totient is φ = 16005061536.

The previous prime is 16005061531. The next prime is 16005061573. The reversal of 16005061537 is 73516050061.

Together with next prime (16005061573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11115695761 + 4889365776 = 105431^2 + 69924^2 .

It is a cyclic number.

It is not a de Polignac number, because 16005061537 - 2⁷ = 16005061409 is a prime.

It is not a weakly prime, because it can be changed into another prime (16005061531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8002530768 + 8002530769.

It is an arithmetic number, because the mean of its divisors is an integer number (8002530769).

Almost surely, 2^16005061537 is an apocalyptic number.

It is an amenable number.

16005061537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16005061537 is an equidigital number, since it uses as much as digits as its factorization.

16005061537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 16005061537 in words is "sixteen billion, five million, sixty-one thousand, five hundred thirty-seven".