155224334145 has 32 divisors (see below), whose sum is σ = 263630844288. Its totient is φ = 77720214528.

The previous prime is 155224334141. The next prime is 155224334201. The reversal of 155224334145 is 541433422551.

It is not a de Polignac number, because 155224334145 - 2² = 155224334141 is a prime.

It is a super-2 number, since 2×155224334145² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155224334141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665419 + ... + 867888.

It is an arithmetic number, because the mean of its divisors is an integer number (8238463884).

Almost surely, 2^155224334145 is an apocalyptic number.

155224334145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155224334145 is a deficient number, since it is larger than the sum of its proper divisors (108406510143).

155224334145 is a wasteful number, since it uses less digits than its factorization.

155224334145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533729.

The product of its digits is 288000, while the sum is 39.

Adding to 155224334145 its reverse (541433422551), we get a palindrome (696657756696).

The spelling of 155224334145 in words is "one hundred fifty-five billion, two hundred twenty-four million, three hundred thirty-four thousand, one hundred forty-five".