505555521213 has 16 divisors (see below), whose sum is σ = 709697488320. Its totient is φ = 319232578176.

The previous prime is 505555521167. The next prime is 505555521223. The reversal of 505555521213 is 312125555505.

It is not a de Polignac number, because 505555521213 - 2²² = 505551326909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555521223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631320 + ... + 1187297.

It is an arithmetic number, because the mean of its divisors is an integer number (44356093020).

Almost surely, 2^505555521213 is an apocalyptic number.

It is an amenable number.

505555521213 is a deficient number, since it is larger than the sum of its proper divisors (204141967107).

505555521213 is a wasteful number, since it uses less digits than its factorization.

505555521213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823516.

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 505555521213 in words is "five hundred five billion, five hundred fifty-five million, five hundred twenty-one thousand, two hundred thirteen".