155155130030357 has 4 divisors (see below), whose sum is σ = 155155288105836. Its totient is φ = 155154971954880.

The previous prime is 155155130030317. The next prime is 155155130030401. The reversal of 155155130030357 is 753030031551551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20280377383876 + 134874752646481 = 4503374^2 + 11613559^2 .

It is a cyclic number.

It is not a de Polignac number, because 155155130030357 - 2³² = 155150835063061 is a prime.

It is a super-2 number, since 2×155155130030357² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155155130030317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77556194 + ... + 79531587.

It is an arithmetic number, because the mean of its divisors is an integer number (38788822026459).

Almost surely, 2^{155155130030357} is an apocalyptic number.

It is an amenable number.

155155130030357 is a deficient number, since it is larger than the sum of its proper divisors (158075479).

155155130030357 is an equidigital number, since it uses as much as digits as its factorization.

155155130030357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158075478.

The product of its (nonzero) digits is 590625, while the sum is 44.

The spelling of 155155130030357 in words is "one hundred fifty-five trillion, one hundred fifty-five billion, one hundred thirty million, thirty thousand, three hundred fifty-seven".