505420612321 has 8 divisors (see below), whose sum is σ = 532034048000. Its totient is φ = 478808411760.

The previous prime is 505420612219. The next prime is 505420612331. The reversal of 505420612321 is 123216024505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505420612321 - 2¹¹ = 505420610273 is a prime.

It is a super-3 number, since 3×505420612321³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (505420612331) 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, 599755 + ... + 1170703.

It is an arithmetic number, because the mean of its divisors is an integer number (66504256000).

Almost surely, 2^505420612321 is an apocalyptic number.

It is an amenable number.

505420612321 is a deficient number, since it is larger than the sum of its proper divisors (26613435679).

505420612321 is a wasteful number, since it uses less digits than its factorization.

505420612321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617559.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 505420612321 its reverse (123216024505), we get a palindrome (628636636826).

The spelling of 505420612321 in words is "five hundred five billion, four hundred twenty million, six hundred twelve thousand, three hundred twenty-one".