155030032009 has 2 divisors, whose sum is σ = 155030032010. Its totient is φ = 155030032008.

The previous prime is 155030031977. The next prime is 155030032021. The reversal of 155030032009 is 900230030551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118776729600 + 36253302409 = 344640^2 + 190403^2 .

It is a cyclic number.

It is not a de Polignac number, because 155030032009 - 2⁵ = 155030031977 is a prime.

It is not a weakly prime, because it can be changed into another prime (155030032909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77515016004 + 77515016005.

It is an arithmetic number, because the mean of its divisors is an integer number (77515016005).

Almost surely, 2^155030032009 is an apocalyptic number.

It is an amenable number.

155030032009 is a deficient number, since it is larger than the sum of its proper divisors (1).

155030032009 is an equidigital number, since it uses as much as digits as its factorization.

155030032009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The spelling of 155030032009 in words is "one hundred fifty-five billion, thirty million, thirty-two thousand, nine".