155167213131 has 36 divisors (see below), whose sum is σ = 267769739952. Its totient is φ = 86270565024.

The previous prime is 155167213129. The next prime is 155167213139. The reversal of 155167213131 is 131312761551.

155167213131 is a `hidden beast` number, since 1 + 5 + 516 + 7 + 2 + 1 + 3 + 131 = 666.

It is not a de Polignac number, because 155167213131 - 2¹ = 155167213129 is a prime.

It is a super-2 number, since 2×155167213131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155167213139) 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 35 ways as a sum of consecutive naturals, for example, 4738455 + ... + 4771088.

It is an arithmetic number, because the mean of its divisors is an integer number (7438048332).

Almost surely, 2^155167213131 is an apocalyptic number.

155167213131 is a deficient number, since it is larger than the sum of its proper divisors (112602526821).

155167213131 is a wasteful number, since it uses less digits than its factorization.

155167213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509600 (or 9509590 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

Adding to 155167213131 its reverse (131312761551), we get a palindrome (286479974682).

The spelling of 155167213131 in words is "one hundred fifty-five billion, one hundred sixty-seven million, two hundred thirteen thousand, one hundred thirty-one".