505212635401 has 4 divisors (see below), whose sum is σ = 510214740804. Its totient is φ = 500210530000.

The previous prime is 505212635377. The next prime is 505212635467. The reversal of 505212635401 is 104536212505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 494490240000 + 10722395401 = 703200^2 + 103549^2 .

It is a cyclic number.

It is not a de Polignac number, because 505212635401 - 2²³ = 505204246793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505212635201) 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, 2501052550 + ... + 2501052751.

It is an arithmetic number, because the mean of its divisors is an integer number (127553685201).

Almost surely, 2^505212635401 is an apocalyptic number.

It is an amenable number.

505212635401 is a deficient number, since it is larger than the sum of its proper divisors (5002105403).

505212635401 is a wasteful number, since it uses less digits than its factorization.

505212635401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002105402.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 505212635401 its reverse (104536212505), we get a palindrome (609748847906).

The spelling of 505212635401 in words is "five hundred five billion, two hundred twelve million, six hundred thirty-five thousand, four hundred one".