16610625603709 has 2 divisors, whose sum is σ = 16610625603710. Its totient is φ = 16610625603708.

The previous prime is 16610625603701. The next prime is 16610625603791. The reversal of 16610625603709 is 90730652601661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16256983680025 + 353641923684 = 4031995^2 + 594678^2 .

It is a cyclic number.

It is not a de Polignac number, because 16610625603709 - 2³ = 16610625603701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16610625603701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8305312801854 + 8305312801855.

It is an arithmetic number, because the mean of its divisors is an integer number (8305312801855).

Almost surely, 2^{16610625603709} is an apocalyptic number.

It is an amenable number.

16610625603709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16610625603709 is an equidigital number, since it uses as much as digits as its factorization.

16610625603709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 16610625603709 in words is "sixteen trillion, six hundred ten billion, six hundred twenty-five million, six hundred three thousand, seven hundred nine".