505405351452 has 24 divisors (see below), whose sum is σ = 1248648515856. Its totient is φ = 158558541568.

The previous prime is 505405351447. The next prime is 505405351453. The reversal of 505405351452 is 254153504505.

It is a self number, because there is not a number n which added to its sum of digits gives 505405351452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505405351453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238738403 + ... + 1238738810.

It is an arithmetic number, because the mean of its divisors is an integer number (52027021494).

Almost surely, 2^505405351452 is an apocalyptic number.

It is an amenable number.

505405351452 is an abundant number, since it is smaller than the sum of its proper divisors (743243164404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505405351452 is a wasteful number, since it uses less digits than its factorization.

505405351452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477477237 (or 2477477235 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

Adding to 505405351452 its reverse (254153504505), we get a palindrome (759558855957).

The spelling of 505405351452 in words is "five hundred five billion, four hundred five million, three hundred fifty-one thousand, four hundred fifty-two".