505404521607 has 8 divisors (see below), whose sum is σ = 673912326384. Its totient is φ = 336916532288.

The previous prime is 505404521569. The next prime is 505404521617. The reversal of 505404521607 is 706125404505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505404521607 - 2¹⁵ = 505404488839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505404521617) 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, 4894248 + ... + 4996445.

It is an arithmetic number, because the mean of its divisors is an integer number (84239040798).

Almost surely, 2^505404521607 is an apocalyptic number.

505404521607 is a deficient number, since it is larger than the sum of its proper divisors (168507804777).

505404521607 is a wasteful number, since it uses less digits than its factorization.

505404521607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907729.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 505404521607 in words is "five hundred five billion, four hundred four million, five hundred twenty-one thousand, six hundred seven".