505515115101 has 16 divisors (see below), whose sum is σ = 674876344320. Its totient is φ = 336582220800.

The previous prime is 505515115031. The next prime is 505515115103. The reversal of 505515115101 is 101511515505.

It is a happy number.

It is not a de Polignac number, because 505515115101 - 2¹⁹ = 505514590813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505515115103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8980821 + ... + 9036933.

It is an arithmetic number, because the mean of its divisors is an integer number (42179771520).

Almost surely, 2^505515115101 is an apocalyptic number.

It is an amenable number.

505515115101 is a deficient number, since it is larger than the sum of its proper divisors (169361229219).

505515115101 is a wasteful number, since it uses less digits than its factorization.

505515115101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59876.

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 505515115101 in words is "five hundred five billion, five hundred fifteen million, one hundred fifteen thousand, one hundred one".