155503232089 has 2 divisors, whose sum is σ = 155503232090. Its totient is φ = 155503232088.

The previous prime is 155503232081. The next prime is 155503232147. The reversal of 155503232089 is 980232305551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138864296025 + 16638936064 = 372645^2 + 128992^2 .

It is a cyclic number.

It is not a de Polignac number, because 155503232089 - 2³ = 155503232081 is a prime.

It is not a weakly prime, because it can be changed into another prime (155503232081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77751616044 + 77751616045.

It is an arithmetic number, because the mean of its divisors is an integer number (77751616045).

Almost surely, 2^155503232089 is an apocalyptic number.

It is an amenable number.

155503232089 is a deficient number, since it is larger than the sum of its proper divisors (1).

155503232089 is an equidigital number, since it uses as much as digits as its factorization.

155503232089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 155503232089 in words is "one hundred fifty-five billion, five hundred three million, two hundred thirty-two thousand, eighty-nine".