521033400019 has 16 divisors (see below), whose sum is σ = 572946886656. Its totient is φ = 469878645600.

The previous prime is 521033400011. The next prime is 521033400073. The reversal of 521033400019 is 910004330125.

It is a cyclic number.

It is not a de Polignac number, because 521033400019 - 2³ = 521033400011 is a prime.

It is a super-2 number, since 2×521033400019² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 521033400019.

It is not an unprimeable number, because it can be changed into a prime (521033400011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14450724 + ... + 14486734.

It is an arithmetic number, because the mean of its divisors is an integer number (35809180416).

Almost surely, 2^521033400019 is an apocalyptic number.

521033400019 is a deficient number, since it is larger than the sum of its proper divisors (51913486637).

521033400019 is a wasteful number, since it uses less digits than its factorization.

521033400019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46506.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 521033400019 in words is "five hundred twenty-one billion, thirty-three million, four hundred thousand, nineteen".