521464620440345 has 8 divisors (see below), whose sum is σ = 626004781819200. Its totient is φ = 417006871491760.

The previous prime is 521464620440329. The next prime is 521464620440363. The reversal of 521464620440345 is 543044026464125.

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

It is not a de Polignac number, because 521464620440345 - 2⁴ = 521464620440329 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 521464620440293 and 521464620440302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20603093645 + ... + 20603118954.

It is an arithmetic number, because the mean of its divisors is an integer number (78250597727400).

Almost surely, 2^{521464620440345} is an apocalyptic number.

It is an amenable number.

521464620440345 is a deficient number, since it is larger than the sum of its proper divisors (104540161378855).

521464620440345 is a wasteful number, since it uses less digits than its factorization.

521464620440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41206215135.

The product of its (nonzero) digits is 11059200, while the sum is 50.

The spelling of 521464620440345 in words is "five hundred twenty-one trillion, four hundred sixty-four billion, six hundred twenty million, four hundred forty thousand, three hundred forty-five".