155323065213 has 16 divisors (see below), whose sum is σ = 230243909760. Its totient is φ = 103487660928.

The previous prime is 155323065203. The next prime is 155323065263. The reversal of 155323065213 is 312560323551.

155323065213 is a `hidden beast` number, since 1 + 553 + 2 + 30 + 65 + 2 + 13 = 666.

It is not a de Polignac number, because 155323065213 - 2¹⁰ = 155323064189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155323065203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1649145 + ... + 1740782.

It is an arithmetic number, because the mean of its divisors is an integer number (14390244360).

Almost surely, 2^155323065213 is an apocalyptic number.

It is an amenable number.

155323065213 is a deficient number, since it is larger than the sum of its proper divisors (74920844547).

155323065213 is a wasteful number, since it uses less digits than its factorization.

155323065213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391633 (or 3391627 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 155323065213 its reverse (312560323551), we get a palindrome (467883388764).

The spelling of 155323065213 in words is "one hundred fifty-five billion, three hundred twenty-three million, sixty-five thousand, two hundred thirteen".