155512232133 has 16 divisors (see below), whose sum is σ = 210092413440. Its totient is φ = 102306348144.

The previous prime is 155512232123. The next prime is 155512232153. The reversal of 155512232133 is 331232215551.

It is not a de Polignac number, because 155512232133 - 2⁵ = 155512232101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155512232094 and 155512232103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155512232123) 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, 149641 + ... + 577422.

It is an arithmetic number, because the mean of its divisors is an integer number (13130775840).

Almost surely, 2^155512232133 is an apocalyptic number.

It is an amenable number.

155512232133 is a deficient number, since it is larger than the sum of its proper divisors (54580181307).

155512232133 is an equidigital number, since it uses as much as digits as its factorization.

155512232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728008.

The product of its digits is 27000, while the sum is 33.

Adding to 155512232133 its reverse (331232215551), we get a palindrome (486744447684).

The spelling of 155512232133 in words is "one hundred fifty-five billion, five hundred twelve million, two hundred thirty-two thousand, one hundred thirty-three".