155544551122 has 8 divisors (see below), whose sum is σ = 233339229900. Its totient is φ = 77764807824.

The previous prime is 155544551111. The next prime is 155544551153. The reversal of 155544551122 is 221155445551.

It can be written as a sum of positive squares in 2 ways, for example, as 95382763281 + 60161787841 = 308841^2 + 245279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3707797 + ... + 3749512.

Almost surely, 2^155544551122 is an apocalyptic number.

155544551122 is a deficient number, since it is larger than the sum of its proper divisors (77794678778).

155544551122 is a wasteful number, since it uses less digits than its factorization.

155544551122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467740.

The product of its digits is 200000, while the sum is 40.

Adding to 155544551122 its reverse (221155445551), we get a palindrome (376699996673).

The spelling of 155544551122 in words is "one hundred fifty-five billion, five hundred forty-four million, five hundred fifty-one thousand, one hundred twenty-two".