16745166437 has 2 divisors, whose sum is σ = 16745166438. Its totient is φ = 16745166436.

The previous prime is 16745166421. The next prime is 16745166463. The reversal of 16745166437 is 73466154761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12887017441 + 3858148996 = 113521^2 + 62114^2 .

It is a cyclic number.

It is not a de Polignac number, because 16745166437 - 2⁴ = 16745166421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16745166937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8372583218 + 8372583219.

It is an arithmetic number, because the mean of its divisors is an integer number (8372583219).

Almost surely, 2^16745166437 is an apocalyptic number.

It is an amenable number.

16745166437 is a deficient number, since it is larger than the sum of its proper divisors (1).

16745166437 is an equidigital number, since it uses as much as digits as its factorization.

16745166437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 50.

The spelling of 16745166437 in words is "sixteen billion, seven hundred forty-five million, one hundred sixty-six thousand, four hundred thirty-seven".