505404521563 has 32 divisors (see below), whose sum is σ = 568150813440. Its totient is φ = 446766658560.

The previous prime is 505404521561. The next prime is 505404521569. The reversal of 505404521563 is 365125404505.

It is not a de Polignac number, because 505404521563 - 2¹ = 505404521561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505404521561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35880520 + ... + 35894602.

It is an arithmetic number, because the mean of its divisors is an integer number (17754712920).

Almost surely, 2^505404521563 is an apocalyptic number.

505404521563 is a deficient number, since it is larger than the sum of its proper divisors (62746291877).

505404521563 is a wasteful number, since it uses less digits than its factorization.

505404521563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15067.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 505404521563 in words is "five hundred five billion, four hundred four million, five hundred twenty-one thousand, five hundred sixty-three".