6405556902210 has 192 divisors, whose sum is σ = 17896394880000. Its totient is φ = 1646518793472.

The previous prime is 6405556902209. The next prime is 6405556902259. The reversal of 6405556902210 is 122096555046.

6405556902210 is a `hidden beast` number, since 6 + 4 + 0 + 5 + 556 + 90 + 2 + 2 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42700416 + ... + 42850164.

It is an arithmetic number, because the mean of its divisors is an integer number (93210390000).

Almost surely, 2^{6405556902210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6405556902210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8948197440000).

6405556902210 is an abundant number, since it is smaller than the sum of its proper divisors (11490837977790).

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

6405556902210 is a wasteful number, since it uses less digits than its factorization.

6405556902210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150407 (or 150395 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 6405556902210 in words is "six trillion, four hundred five billion, five hundred fifty-six million, nine hundred two thousand, two hundred ten".