155121241140444 has 96 divisors (see below), whose sum is σ = 367010871808000. Its totient is φ = 50985782055936.

The previous prime is 155121241140413. The next prime is 155121241140451. The reversal of 155121241140444 is 444041142121551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3226358397 + ... + 3226406475.

Almost surely, 2^{155121241140444} is an apocalyptic number.

It is an amenable number.

155121241140444 is an abundant number, since it is smaller than the sum of its proper divisors (211889630667556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155121241140444 is a wasteful number, since it uses less digits than its factorization.

155121241140444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52547 (or 52545 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

Adding to 155121241140444 its reverse (444041142121551), we get a palindrome (599162383261995).

The spelling of 155121241140444 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, two hundred forty-one million, one hundred forty thousand, four hundred forty-four".