155272301689 has 2 divisors, whose sum is σ = 155272301690. Its totient is φ = 155272301688.

The previous prime is 155272301683. The next prime is 155272301731. The reversal of 155272301689 is 986103272551.

155272301689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105316475625 + 49955826064 = 324525^2 + 223508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155272301689 is a prime.

It is not a weakly prime, because it can be changed into another prime (155272301683) 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, 77636150844 + 77636150845.

It is an arithmetic number, because the mean of its divisors is an integer number (77636150845).

Almost surely, 2^155272301689 is an apocalyptic number.

It is an amenable number.

155272301689 is a deficient number, since it is larger than the sum of its proper divisors (1).

155272301689 is an equidigital number, since it uses as much as digits as its factorization.

155272301689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 155272301689 in words is "one hundred fifty-five billion, two hundred seventy-two million, three hundred one thousand, six hundred eighty-nine".