16607685553 has 2 divisors, whose sum is σ = 16607685554. Its totient is φ = 16607685552.

The previous prime is 16607685533. The next prime is 16607685557. The reversal of 16607685553 is 35558670661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16533587889 + 74097664 = 128583^2 + 8608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16607685553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16607685553.

It is not a weakly prime, because it can be changed into another prime (16607685557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303842776 + 8303842777.

It is an arithmetic number, because the mean of its divisors is an integer number (8303842777).

Almost surely, 2^16607685553 is an apocalyptic number.

It is an amenable number.

16607685553 is a deficient number, since it is larger than the sum of its proper divisors (1).

16607685553 is an equidigital number, since it uses as much as digits as its factorization.

16607685553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 16607685553 in words is "sixteen billion, six hundred seven million, six hundred eighty-five thousand, five hundred fifty-three".