521453004198 has 32 divisors (see below), whose sum is σ = 1195960502016. Its totient is φ = 148478082528.

The previous prime is 521453004173. The next prime is 521453004211. The reversal of 521453004198 is 891400354125.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 21174636 + ... + 21199247.

It is an arithmetic number, because the mean of its divisors is an integer number (37373765688).

Almost surely, 2^521453004198 is an apocalyptic number.

521453004198 is an abundant number, since it is smaller than the sum of its proper divisors (674507497818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521453004198 is a wasteful number, since it uses less digits than its factorization.

521453004198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42374188.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 521453004198 in words is "five hundred twenty-one billion, four hundred fifty-three million, four thousand, one hundred ninety-eight".