3668544862920 has 896 divisors, whose sum is σ = 14765875280640. Its totient is φ = 802386155520.

The previous prime is 3668544862909. The next prime is 3668544862933. The reversal of 3668544862920 is 292684458663.

It is a happy number.

3668544862920 is a `hidden beast` number, since 3 + 6 + 6 + 8 + 544 + 8 + 62 + 9 + 20 = 666.

It is a super-2 number, since 2×3668544862920² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 460694859 + ... + 460702821.

Almost surely, 2^{3668544862920} is an apocalyptic number.

3668544862920 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 3668544862920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7382937640320).

3668544862920 is an abundant number, since it is smaller than the sum of its proper divisors (11097330417720).

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

3668544862920 is a wasteful number, since it uses less digits than its factorization.

3668544862920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097 (or 8078 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 3668544862920 in words is "three trillion, six hundred sixty-eight billion, five hundred forty-four million, eight hundred sixty-two thousand, nine hundred twenty".