155255233123 has 8 divisors (see below), whose sum is σ = 159430818960. Its totient is φ = 151098165120.

The previous prime is 155255233103. The next prime is 155255233187. The reversal of 155255233123 is 321332552551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155255233123 - 2³³ = 146665298531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155255233103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4612465 + ... + 4646002.

It is an arithmetic number, because the mean of its divisors is an integer number (19928852370).

Almost surely, 2^155255233123 is an apocalyptic number.

155255233123 is a deficient number, since it is larger than the sum of its proper divisors (4175585837).

155255233123 is an equidigital number, since it uses as much as digits as its factorization.

155255233123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258917.

The product of its digits is 135000, while the sum is 37.

Adding to 155255233123 its reverse (321332552551), we get a palindrome (476587785674).

The spelling of 155255233123 in words is "one hundred fifty-five billion, two hundred fifty-five million, two hundred thirty-three thousand, one hundred twenty-three".