156606225775673 has 2 divisors, whose sum is σ = 156606225775674. Its totient is φ = 156606225775672.

The previous prime is 156606225775667. The next prime is 156606225775789. The reversal of 156606225775673 is 376577522606651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123849009790009 + 32757215985664 = 11128747^2 + 5723392^2 .

It is a cyclic number.

It is not a de Polignac number, because 156606225775673 - 2²⁰ = 156606224727097 is a prime.

It is not a weakly prime, because it can be changed into another prime (156606225775603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78303112887836 + 78303112887837.

It is an arithmetic number, because the mean of its divisors is an integer number (78303112887837).

Almost surely, 2^{156606225775673} is an apocalyptic number.

It is an amenable number.

156606225775673 is a deficient number, since it is larger than the sum of its proper divisors (1).

156606225775673 is an equidigital number, since it uses as much as digits as its factorization.

156606225775673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792000, while the sum is 68.

The spelling of 156606225775673 in words is "one hundred fifty-six trillion, six hundred six billion, two hundred twenty-five million, seven hundred seventy-five thousand, six hundred seventy-three".