521352143234 has 32 divisors (see below), whose sum is σ = 886854044160. Its totient is φ = 227871100800.

The previous prime is 521352143231. The next prime is 521352143239. The reversal of 521352143234 is 432341253125.

It is a junction number, because it is equal to n+sod(n) for n = 521352143194 and 521352143203.

It is not an unprimeable number, because it can be changed into a prime (521352143231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076294 + ... + 1483614.

It is an arithmetic number, because the mean of its divisors is an integer number (27714188880).

Almost surely, 2^521352143234 is an apocalyptic number.

521352143234 is a deficient number, since it is larger than the sum of its proper divisors (365501900926).

521352143234 is a wasteful number, since it uses less digits than its factorization.

521352143234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409946.

The product of its digits is 86400, while the sum is 35.

Adding to 521352143234 its reverse (432341253125), we get a palindrome (953693396359).

The spelling of 521352143234 in words is "five hundred twenty-one billion, three hundred fifty-two million, one hundred forty-three thousand, two hundred thirty-four".