155530316233 has 4 divisors (see below), whose sum is σ = 155533566928. Its totient is φ = 155527065540.

The previous prime is 155530316209. The next prime is 155530316239. The reversal of 155530316233 is 332613035551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155530316233 - 2²¹ = 155528219081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155530316192 and 155530316201.

It is not an unprimeable number, because it can be changed into a prime (155530316239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552491 + ... + 1649632.

It is an arithmetic number, because the mean of its divisors is an integer number (38883391732).

Almost surely, 2^155530316233 is an apocalyptic number.

It is an amenable number.

155530316233 is a deficient number, since it is larger than the sum of its proper divisors (3250695).

155530316233 is an equidigital number, since it uses as much as digits as its factorization.

155530316233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250694.

The product of its (nonzero) digits is 121500, while the sum is 37.

The spelling of 155530316233 in words is "one hundred fifty-five billion, five hundred thirty million, three hundred sixteen thousand, two hundred thirty-three".