505154334334451 has 24 divisors (see below), whose sum is σ = 575152923538944. Its totient is φ = 441917828501760.

The previous prime is 505154334334427. The next prime is 505154334334457. The reversal of 505154334334451 is 154433433451505.

It is not a de Polignac number, because 505154334334451 - 2¹⁰ = 505154334333427 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 505154334334451.

It is not an unprimeable number, because it can be changed into a prime (505154334334457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 776211635 + ... + 776862156.

It is an arithmetic number, because the mean of its divisors is an integer number (23964705147456).

Almost surely, 2^{505154334334451} is an apocalyptic number.

505154334334451 is a deficient number, since it is larger than the sum of its proper divisors (69998589204493).

505154334334451 is a wasteful number, since it uses less digits than its factorization.

505154334334451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553073899 (or 1553073880 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 50.

Adding to 505154334334451 its reverse (154433433451505), we get a palindrome (659587767785956).

The spelling of 505154334334451 in words is "five hundred five trillion, one hundred fifty-four billion, three hundred thirty-four million, three hundred thirty-four thousand, four hundred fifty-one".