155645332213 has 16 divisors (see below), whose sum is σ = 179184854016. Its totient is φ = 132435325440.

The previous prime is 155645332187. The next prime is 155645332223. The reversal of 155645332213 is 312233546551.

It is a cyclic number.

It is not a de Polignac number, because 155645332213 - 2⁵ = 155645332181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155645332223) 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, 409803 + ... + 692263.

It is an arithmetic number, because the mean of its divisors is an integer number (11199053376).

Almost surely, 2^155645332213 is an apocalyptic number.

It is an amenable number.

155645332213 is a deficient number, since it is larger than the sum of its proper divisors (23539521803).

155645332213 is a wasteful number, since it uses less digits than its factorization.

155645332213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283044.

The product of its digits is 324000, while the sum is 40.

Adding to 155645332213 its reverse (312233546551), we get a palindrome (467878878764).

The spelling of 155645332213 in words is "one hundred fifty-five billion, six hundred forty-five million, three hundred thirty-two thousand, two hundred thirteen".