155511311119 has 4 divisors (see below), whose sum is σ = 162272672496. Its totient is φ = 148749949744.

The previous prime is 155511311099. The next prime is 155511311141. The reversal of 155511311119 is 911113115551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911113115551 = 41 ⋅22222271111.

It is a cyclic number.

It is not a de Polignac number, because 155511311119 - 2¹⁷ = 155511180047 is a prime.

It is a super-2 number, since 2×155511311119² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155511311419) 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 3 ways as a sum of consecutive naturals, for example, 3380680654 + ... + 3380680699.

It is an arithmetic number, because the mean of its divisors is an integer number (40568168124).

Almost surely, 2^155511311119 is an apocalyptic number.

155511311119 is a deficient number, since it is larger than the sum of its proper divisors (6761361377).

155511311119 is an equidigital number, since it uses as much as digits as its factorization.

155511311119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761361376.

The product of its digits is 3375, while the sum is 34.

The spelling of 155511311119 in words is "one hundred fifty-five billion, five hundred eleven million, three hundred eleven thousand, one hundred nineteen".