155121241140445 has 32 divisors (see below), whose sum is σ = 195580446048000. Its totient is φ = 117881869400064.

The previous prime is 155121241140413. The next prime is 155121241140451. The reversal of 155121241140445 is 544041142121551.

It is not a de Polignac number, because 155121241140445 - 2⁵ = 155121241140413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155121241140398 and 155121241140407.

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, 87418246 + ... + 89175064.

It is an arithmetic number, because the mean of its divisors is an integer number (6111888939000).

Almost surely, 2^{155121241140445} is an apocalyptic number.

It is an amenable number.

155121241140445 is a deficient number, since it is larger than the sum of its proper divisors (40459204907555).

155121241140445 is a wasteful number, since it uses less digits than its factorization.

155121241140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762149.

The product of its (nonzero) digits is 128000, while the sum is 40.

Adding to 155121241140445 its reverse (544041142121551), we get a palindrome (699162383261996).

The spelling of 155121241140445 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-five".