3663402085420 has 384 divisors, whose sum is σ = 10356634681344. Its totient is φ = 1054373760000.

The previous prime is 3663402085417. The next prime is 3663402085471. The reversal of 3663402085420 is 245802043663.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 473242750 + ... + 473250490.

It is an arithmetic number, because the mean of its divisors is an integer number (26970402816).

Almost surely, 2^{3663402085420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3663402085420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5178317340672).

3663402085420 is an abundant number, since it is smaller than the sum of its proper divisors (6693232595924).

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

3663402085420 is a wasteful number, since it uses less digits than its factorization.

3663402085420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253 (or 8251 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 3663402085420 in words is "three trillion, six hundred sixty-three billion, four hundred two million, eighty-five thousand, four hundred twenty".