155324502005 has 4 divisors (see below), whose sum is σ = 186389402412. Its totient is φ = 124259601600.

The previous prime is 155324502001. The next prime is 155324502013. The reversal of 155324502005 is 500205423551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110036831524 + 45287670481 = 331718^2 + 212809^2 .

It is not a de Polignac number, because 155324502005 - 2² = 155324502001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155324502001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15532450196 + ... + 15532450205.

It is an arithmetic number, because the mean of its divisors is an integer number (46597350603).

Almost surely, 2^155324502005 is an apocalyptic number.

It is an amenable number.

155324502005 is a deficient number, since it is larger than the sum of its proper divisors (31064900407).

155324502005 is an equidigital number, since it uses as much as digits as its factorization.

155324502005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31064900406.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 155324502005 its reverse (500205423551), we get a palindrome (655529925556).

The spelling of 155324502005 in words is "one hundred fifty-five billion, three hundred twenty-four million, five hundred two thousand, five".