3565220630400 has 576 divisors, whose sum is σ = 14945584202640. Its totient is φ = 797810688000.

The previous prime is 3565220630351. The next prime is 3565220630407. The reversal of 3565220630400 is 40360225653.

3565220630400 is a `hidden beast` number, since 3 + 565 + 2 + 20 + 6 + 30 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3565220630407) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3685560 + ... + 4551240.

Almost surely, 2^{3565220630400} is an apocalyptic number.

3565220630400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3565220630400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7472792101320).

3565220630400 is an abundant number, since it is smaller than the sum of its proper divisors (11380363572240).

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

3565220630400 is a wasteful number, since it uses less digits than its factorization.

3565220630400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865735 (or 865715 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 3565220630400 in words is "three trillion, five hundred sixty-five billion, two hundred twenty million, six hundred thirty thousand, four hundred".