505525161663 has 12 divisors (see below), whose sum is σ = 730284199008. Its totient is φ = 336979303200.

The previous prime is 505525161613. The next prime is 505525161677. The reversal of 505525161663 is 366161525505.

505525161663 is a `hidden beast` number, since 5 + 0 + 5 + 5 + 25 + 1 + 616 + 6 + 3 = 666.

It is not a de Polignac number, because 505525161663 - 2²¹ = 505523064511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505525161613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3037038 + ... + 3199163.

It is an arithmetic number, because the mean of its divisors is an integer number (60857016584).

Almost surely, 2^505525161663 is an apocalyptic number.

505525161663 is a deficient number, since it is larger than the sum of its proper divisors (224759037345).

505525161663 is a wasteful number, since it uses less digits than its factorization.

505525161663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6245214 (or 6245211 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 505525161663 in words is "five hundred five billion, five hundred twenty-five million, one hundred sixty-one thousand, six hundred sixty-three".