3668686852020 has 24 divisors (see below), whose sum is σ = 10272323185824. Its totient is φ = 978316493856.

The previous prime is 3668686851911. The next prime is 3668686852057. The reversal of 3668686852020 is 202586868663.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 61144780867 = 3668686852020 / (3 + 6 + 6 + 8 + 6 + 8 + 6 + 8 + 5 + 2 + 0 + 2 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30572390374 + ... + 30572390493.

It is an arithmetic number, because the mean of its divisors is an integer number (428013466076).

Almost surely, 2^{3668686852020} is an apocalyptic number.

3668686852020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3668686852020 is an abundant number, since it is smaller than the sum of its proper divisors (6603636333804).

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

3668686852020 is a wasteful number, since it uses less digits than its factorization.

3668686852020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61144780879 (or 61144780877 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 3668686852020 in words is "three trillion, six hundred sixty-eight billion, six hundred eighty-six million, eight hundred fifty-two thousand, twenty".