4661583786020 has 72 divisors (see below), whose sum is σ = 11388012040440. Its totient is φ = 1598197117440.

The previous prime is 4661583786019. The next prime is 4661583786023. The reversal of 4661583786020 is 206873851664.

It can be written as a sum of positive squares in 4 ways, for example, as 1143205747264 + 3518378038756 = 1069208^2 + 1875734^2 .

It is not an unprimeable number, because it can be changed into a prime (4661583786023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31707080 + ... + 31853760.

It is an arithmetic number, because the mean of its divisors is an integer number (158166833895).

Almost surely, 2^{4661583786020} is an apocalyptic number.

It is an amenable number.

4661583786020 is an abundant number, since it is smaller than the sum of its proper divisors (6726428254420).

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

4661583786020 is a wasteful number, since it uses less digits than its factorization.

4661583786020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179133 (or 179124 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 4661583786020 in words is "four trillion, six hundred sixty-one billion, five hundred eighty-three million, seven hundred eighty-six thousand, twenty".