12020785727461 has 16 divisors (see below), whose sum is σ = 14181384526848. Its totient is φ = 9971031340800.

The previous prime is 12020785727449. The next prime is 12020785727507. The reversal of 12020785727461 is 16472758702021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12020785727461 - 2¹³ = 12020785719269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020785727399 and 12020785727408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020785727411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19151931 + ... + 19769623.

It is an arithmetic number, because the mean of its divisors is an integer number (886336532928).

Almost surely, 2^{12020785727461} is an apocalyptic number.

It is an amenable number.

12020785727461 is a deficient number, since it is larger than the sum of its proper divisors (2160598799387).

12020785727461 is an equidigital number, since it uses as much as digits as its factorization.

12020785727461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707412.

The product of its (nonzero) digits is 2634240, while the sum is 52.

The spelling of 12020785727461 in words is "twelve trillion, twenty billion, seven hundred eighty-five million, seven hundred twenty-seven thousand, four hundred sixty-one".