155034400189 has 2 divisors, whose sum is σ = 155034400190. Its totient is φ = 155034400188.

The previous prime is 155034400043. The next prime is 155034400193. The reversal of 155034400189 is 981004430551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103886959225 + 51147440964 = 322315^2 + 226158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155034400189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155034400289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77517200094 + 77517200095.

It is an arithmetic number, because the mean of its divisors is an integer number (77517200095).

Almost surely, 2^155034400189 is an apocalyptic number.

It is an amenable number.

155034400189 is a deficient number, since it is larger than the sum of its proper divisors (1).

155034400189 is an equidigital number, since it uses as much as digits as its factorization.

155034400189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 155034400189 in words is "one hundred fifty-five billion, thirty-four million, four hundred thousand, one hundred eighty-nine".