521340424355 has 8 divisors (see below), whose sum is σ = 625672490352. Its totient is φ = 417029685408.

The previous prime is 521340424337. The next prime is 521340424399. The reversal of 521340424355 is 553424043125.

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 521340424355 - 2³⁶ = 452620947619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5277932 + ... + 5375801.

It is an arithmetic number, because the mean of its divisors is an integer number (78209061294).

Almost surely, 2^521340424355 is an apocalyptic number.

521340424355 is a deficient number, since it is larger than the sum of its proper divisors (104332065997).

521340424355 is a wasteful number, since it uses less digits than its factorization.

521340424355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663525.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 521340424355 in words is "five hundred twenty-one billion, three hundred forty million, four hundred twenty-four thousand, three hundred fifty-five".