513401333421 has 8 divisors (see below), whose sum is σ = 690932636064. Its totient is φ = 339068793200.

The previous prime is 513401333413. The next prime is 513401333437. The reversal of 513401333421 is 124333104315.

It is a happy number.

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 513401333421 - 2³ = 513401333413 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 (513401833421) 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, 799690230 + ... + 799690871.

It is an arithmetic number, because the mean of its divisors is an integer number (86366579508).

Almost surely, 2^513401333421 is an apocalyptic number.

It is an amenable number.

513401333421 is a deficient number, since it is larger than the sum of its proper divisors (177531302643).

513401333421 is a wasteful number, since it uses less digits than its factorization.

513401333421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599381211.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 513401333421 its reverse (124333104315), we get a palindrome (637734437736).

The spelling of 513401333421 in words is "five hundred thirteen billion, four hundred one million, three hundred thirty-three thousand, four hundred twenty-one".