3655766474920 has 192 divisors, whose sum is σ = 10135244309760. Its totient is φ = 1179211622400.

The previous prime is 3655766474851. The next prime is 3655766474929. The reversal of 3655766474920 is 294746675563.

It is not an unprimeable number, because it can be changed into a prime (3655766474929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90310285 + ... + 90350755.

It is an arithmetic number, because the mean of its divisors is an integer number (52787730780).

Almost surely, 2^{3655766474920} 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 3655766474920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5067622154880).

3655766474920 is an abundant number, since it is smaller than the sum of its proper divisors (6479477834840).

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

3655766474920 is a wasteful number, since it uses less digits than its factorization.

3655766474920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43224 (or 43213 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 64.

The spelling of 3655766474920 in words is "three trillion, six hundred fifty-five billion, seven hundred sixty-six million, four hundred seventy-four thousand, nine hundred twenty".