155544022345 has 16 divisors (see below), whose sum is σ = 186965060688. Its totient is φ = 124227198720.

The previous prime is 155544022343. The next prime is 155544022423. The reversal of 155544022345 is 543220445551.

It can be written as a sum of positive squares in 8 ways, for example, as 1023488064 + 154520534281 = 31992^2 + 393091^2 .

It is not a de Polignac number, because 155544022345 - 2¹ = 155544022343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155544022298 and 155544022307.

It is not an unprimeable number, because it can be changed into a prime (155544022343) 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, 11617555 + ... + 11630935.

It is an arithmetic number, because the mean of its divisors is an integer number (11685316293).

Almost surely, 2^155544022345 is an apocalyptic number.

It is an amenable number.

155544022345 is a deficient number, since it is larger than the sum of its proper divisors (31421038343).

155544022345 is a wasteful number, since it uses less digits than its factorization.

155544022345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17100.

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 155544022345 its reverse (543220445551), we get a palindrome (698764467896).

The spelling of 155544022345 in words is "one hundred fifty-five billion, five hundred forty-four million, twenty-two thousand, three hundred forty-five".