155534223243 has 16 divisors (see below), whose sum is σ = 237110549760. Its totient is φ = 88836941856.

The previous prime is 155534223227. The next prime is 155534223253. The reversal of 155534223243 is 342322435551.

It is not a de Polignac number, because 155534223243 - 2⁴ = 155534223227 is a prime.

It is a super-2 number, since 2×155534223243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155534223223) 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, 1608453 + ... + 1702406.

It is an arithmetic number, because the mean of its divisors is an integer number (14819409360).

Almost surely, 2^155534223243 is an apocalyptic number.

155534223243 is a deficient number, since it is larger than the sum of its proper divisors (81576326517).

155534223243 is a wasteful number, since it uses less digits than its factorization.

155534223243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313106.

The product of its digits is 432000, while the sum is 39.

Adding to 155534223243 its reverse (342322435551), we get a palindrome (497856658794).

The spelling of 155534223243 in words is "one hundred fifty-five billion, five hundred thirty-four million, two hundred twenty-three thousand, two hundred forty-three".