6403500165220 has 24 divisors (see below), whose sum is σ = 13447474596864. Its totient is φ = 2561376399456.

The previous prime is 6403500165217. The next prime is 6403500165247. The reversal of 6403500165220 is 225610053046.

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, 827229 + ... + 3673051.

It is an arithmetic number, because the mean of its divisors is an integer number (560311441536).

Almost surely, 2^{6403500165220} is an apocalyptic number.

It is an amenable number.

6403500165220 is an abundant number, since it is smaller than the sum of its proper divisors (7043974431644).

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

6403500165220 is a wasteful number, since it uses less digits than its factorization.

6403500165220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958339 (or 2958337 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 6403500165220 in words is "six trillion, four hundred three billion, five hundred million, one hundred sixty-five thousand, two hundred twenty".