521000050345040 has 80 divisors (see below), whose sum is σ = 1391398829453952. Its totient is φ = 177721844547072.

The previous prime is 521000050345039. The next prime is 521000050345079. The reversal of 521000050345040 is 40543050000125.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 521000050344994 and 521000050345012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2361202454 + ... + 2361423093.

Almost surely, 2^{521000050345040} is an apocalyptic number.

It is an amenable number.

521000050345040 is an abundant number, since it is smaller than the sum of its proper divisors (870398779108912).

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

521000050345040 is a wasteful number, since it uses less digits than its factorization.

521000050345040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722625764 (or 4722625758 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 521000050345040 in words is "five hundred twenty-one trillion, fifty million, three hundred forty-five thousand, forty".