155434552013 has 6 divisors (see below), whose sum is σ = 168310787274. Its totient is φ = 143478047856.

The previous prime is 155434551971. The next prime is 155434552019. The reversal of 155434552013 is 310255434551.

It can be written as a sum of positive squares in 3 ways, for example, as 3523253449 + 151911298564 = 59357^2 + 389758^2 .

It is not a de Polignac number, because 155434552013 - 2⁸ = 155434551757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155434552019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 459865370 + ... + 459865707.

It is an arithmetic number, because the mean of its divisors is an integer number (28051797879).

Almost surely, 2^155434552013 is an apocalyptic number.

155434552013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155434552013 is a deficient number, since it is larger than the sum of its proper divisors (12876235261).

155434552013 is an equidigital number, since it uses as much as digits as its factorization.

155434552013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919731103 (or 919731090 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 155434552013 its reverse (310255434551), we get a palindrome (465689986564).

The spelling of 155434552013 in words is "one hundred fifty-five billion, four hundred thirty-four million, five hundred fifty-two thousand, thirteen".