155430231840117 has 24 divisors (see below), whose sum is σ = 241967932915800. Its totient is φ = 95575169023488.

The previous prime is 155430231840097. The next prime is 155430231840223. The reversal of 155430231840117 is 711048132034551.

155430231840117 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 3 + 0 + 231 + 8 + 401 + 1 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2017879911441 + 153412351928676 = 1420521^2 + 12385974^2 .

It is not a de Polignac number, because 155430231840117 - 2⁶ = 155430231840053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155430231848117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515156992 + ... + 515458617.

It is an arithmetic number, because the mean of its divisors is an integer number (10081997204825).

Almost surely, 2^{155430231840117} is an apocalyptic number.

It is an amenable number.

155430231840117 is a deficient number, since it is larger than the sum of its proper divisors (86537701075683).

155430231840117 is a wasteful number, since it uses less digits than its factorization.

155430231840117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030616917 (or 1030616914 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

Adding to 155430231840117 its reverse (711048132034551), we get a palindrome (866478363874668).

The spelling of 155430231840117 in words is "one hundred fifty-five trillion, four hundred thirty billion, two hundred thirty-one million, eight hundred forty thousand, one hundred seventeen".