505644300541 has 4 divisors (see below), whose sum is σ = 505645728732. Its totient is φ = 505642872352.

The previous prime is 505644300529. The next prime is 505644300547. The reversal of 505644300541 is 145003446505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 130769747641 + 374874552900 = 361621^2 + 612270^2 .

It is a cyclic number.

It is not a de Polignac number, because 505644300541 - 2⁵ = 505644300509 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 505644300541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505644300547) 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, 258831 + ... + 1038403.

It is an arithmetic number, because the mean of its divisors is an integer number (126411432183).

Almost surely, 2^505644300541 is an apocalyptic number.

It is an amenable number.

505644300541 is a deficient number, since it is larger than the sum of its proper divisors (1428191).

505644300541 is an equidigital number, since it uses as much as digits as its factorization.

505644300541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428190.

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

The spelling of 505644300541 in words is "five hundred five billion, six hundred forty-four million, three hundred thousand, five hundred forty-one".