1606372663061 has 2 divisors, whose sum is σ = 1606372663062. Its totient is φ = 1606372663060.

The previous prime is 1606372663057. The next prime is 1606372663067. The reversal of 1606372663061 is 1603662736061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1570046590225 + 36326072836 = 1253015^2 + 190594^2 .

It is an emirp because it is prime and its reverse (1603662736061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1606372663061 - 2² = 1606372663057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606372662997 and 1606372663015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606372663067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803186331530 + 803186331531.

It is an arithmetic number, because the mean of its divisors is an integer number (803186331531).

Almost surely, 2^{1606372663061} is an apocalyptic number.

It is an amenable number.

1606372663061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606372663061 is an equidigital number, since it uses as much as digits as its factorization.

1606372663061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 1606372663061 in words is "one trillion, six hundred six billion, three hundred seventy-two million, six hundred sixty-three thousand, sixty-one".