505544634131 has 4 divisors (see below), whose sum is σ = 505552193712. Its totient is φ = 505537074552.

The previous prime is 505544634107. The next prime is 505544634163. The reversal of 505544634131 is 131436445505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505544634131 is a prime.

It is a super-2 number, since 2×505544634131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505544634191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3678575 + ... + 3813528.

It is an arithmetic number, because the mean of its divisors is an integer number (126388048428).

Almost surely, 2^505544634131 is an apocalyptic number.

505544634131 is a deficient number, since it is larger than the sum of its proper divisors (7559581).

505544634131 is an equidigital number, since it uses as much as digits as its factorization.

505544634131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7559580.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 505544634131 in words is "five hundred five billion, five hundred forty-four million, six hundred thirty-four thousand, one hundred thirty-one".