155145030013 has 4 divisors (see below), whose sum is σ = 156041822268. Its totient is φ = 154248237760.

The previous prime is 155145029947. The next prime is 155145030023. The reversal of 155145030013 is 310030541551.

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 72728381124 + 82416648889 = 269682^2 + 287083^2 .

It is a cyclic number.

It is not a de Polignac number, because 155145030013 - 2¹³ = 155145021821 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 (155145030023) 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, 448395868 + ... + 448396213.

It is an arithmetic number, because the mean of its divisors is an integer number (39010455567).

Almost surely, 2^155145030013 is an apocalyptic number.

It is an amenable number.

155145030013 is a deficient number, since it is larger than the sum of its proper divisors (896792255).

155145030013 is an equidigital number, since it uses as much as digits as its factorization.

155145030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896792254.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 155145030013 its reverse (310030541551), we get a palindrome (465175571564).

The spelling of 155145030013 in words is "one hundred fifty-five billion, one hundred forty-five million, thirty thousand, thirteen".