505553530330155 has 32 divisors (see below), whose sum is σ = 810824098406400. Its totient is φ = 268982693518592.

The previous prime is 505553530330133. The next prime is 505553530330231. The reversal of 505553530330155 is 551033035355505.

It is a cyclic number.

It is not a de Polignac number, because 505553530330155 - 2¹⁴ = 505553530313771 is a prime.

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, 18338326 + ... + 36706964.

It is an arithmetic number, because the mean of its divisors is an integer number (25338253075200).

Almost surely, 2^{505553530330155} is an apocalyptic number.

505553530330155 is a deficient number, since it is larger than the sum of its proper divisors (305270568076245).

505553530330155 is a wasteful number, since it uses less digits than its factorization.

505553530330155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373043.

The product of its (nonzero) digits is 6328125, while the sum is 48.

The spelling of 505553530330155 in words is "five hundred five trillion, five hundred fifty-three billion, five hundred thirty million, three hundred thirty thousand, one hundred fifty-five".