501534343253 has 4 divisors (see below), whose sum is σ = 523340184288. Its totient is φ = 479728502220.

The previous prime is 501534343229. The next prime is 501534343279. The reversal of 501534343253 is 352343435105.

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 a cyclic number.

It is not a de Polignac number, because 501534343253 - 2¹⁴ = 501534326869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501534343283) 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, 10902920483 + ... + 10902920528.

It is an arithmetic number, because the mean of its divisors is an integer number (130835046072).

Almost surely, 2^501534343253 is an apocalyptic number.

It is an amenable number.

501534343253 is a deficient number, since it is larger than the sum of its proper divisors (21805841035).

501534343253 is a wasteful number, since it uses less digits than its factorization.

501534343253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21805841034.

The product of its (nonzero) digits is 324000, while the sum is 38.

Adding to 501534343253 its reverse (352343435105), we get a palindrome (853877778358).

The spelling of 501534343253 in words is "five hundred one billion, five hundred thirty-four million, three hundred forty-three thousand, two hundred fifty-three".