16354690537 has 2 divisors, whose sum is σ = 16354690538. Its totient is φ = 16354690536.

The previous prime is 16354690507. The next prime is 16354690571. The reversal of 16354690537 is 73509645361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15134166441 + 1220524096 = 123021^2 + 34936^2 .

It is a cyclic number.

It is not a de Polignac number, because 16354690537 - 2⁷ = 16354690409 is a prime.

It is a super-2 number, since 2×16354690537² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16354690507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8177345268 + 8177345269.

It is an arithmetic number, because the mean of its divisors is an integer number (8177345269).

Almost surely, 2^16354690537 is an apocalyptic number.

It is an amenable number.

16354690537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16354690537 is an equidigital number, since it uses as much as digits as its factorization.

16354690537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 49.

The spelling of 16354690537 in words is "sixteen billion, three hundred fifty-four million, six hundred ninety thousand, five hundred thirty-seven".