505244133541 has 4 divisors (see below), whose sum is σ = 577421866912. Its totient is φ = 433066400172.

The previous prime is 505244133509. The next prime is 505244133607. The reversal of 505244133541 is 145331442505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 505244133541 - 2⁵ = 505244133509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505244133541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505244133041) 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, 36088866675 + ... + 36088866688.

It is an arithmetic number, because the mean of its divisors is an integer number (144355466728).

Almost surely, 2^505244133541 is an apocalyptic number.

It is an amenable number.

505244133541 is a deficient number, since it is larger than the sum of its proper divisors (72177733371).

505244133541 is an equidigital number, since it uses as much as digits as its factorization.

505244133541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72177733370.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 505244133541 in words is "five hundred five billion, two hundred forty-four million, one hundred thirty-three thousand, five hundred forty-one".