155032042213 has 2 divisors, whose sum is σ = 155032042214. Its totient is φ = 155032042212.

The previous prime is 155032042177. The next prime is 155032042219. The reversal of 155032042213 is 312240230551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108700771204 + 46331271009 = 329698^2 + 215247^2 .

It is an emirp because it is prime and its reverse (312240230551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155032042213 is a prime.

It is a super-2 number, since 2×155032042213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155032042219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77516021106 + 77516021107.

It is an arithmetic number, because the mean of its divisors is an integer number (77516021107).

Almost surely, 2^155032042213 is an apocalyptic number.

It is an amenable number.

155032042213 is a deficient number, since it is larger than the sum of its proper divisors (1).

155032042213 is an equidigital number, since it uses as much as digits as its factorization.

155032042213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 155032042213 its reverse (312240230551), we get a palindrome (467272272764).

The spelling of 155032042213 in words is "one hundred fifty-five billion, thirty-two million, forty-two thousand, two hundred thirteen".