155555033651361 has 8 divisors (see below), whose sum is σ = 230451901705760. Its totient is φ = 103703355767556.

The previous prime is 155555033651359. The next prime is 155555033651399. The reversal of 155555033651361 is 163156330555551.

155555033651361 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 5 + 503 + 3 + 65 + 13 + 61 = 666.

It is not a de Polignac number, because 155555033651361 - 2¹ = 155555033651359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155555033651298 and 155555033651307.

It is not an unprimeable number, because it can be changed into a prime (155555033651761) 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 7 ways as a sum of consecutive naturals, for example, 2880648771295 + ... + 2880648771348.

It is an arithmetic number, because the mean of its divisors is an integer number (28806487713220).

Almost surely, 2^{155555033651361} is an apocalyptic number.

It is an amenable number.

155555033651361 is a deficient number, since it is larger than the sum of its proper divisors (74896868054399).

155555033651361 is an equidigital number, since it uses as much as digits as its factorization.

155555033651361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761297542652 (or 5761297542646 counting only the distinct ones).

The product of its (nonzero) digits is 15187500, while the sum is 54.

The spelling of 155555033651361 in words is "one hundred fifty-five trillion, five hundred fifty-five billion, thirty-three million, six hundred fifty-one thousand, three hundred sixty-one".