12020465709 has 12 divisors (see below), whose sum is σ = 19843308576. Its totient is φ = 6868837512.

The previous prime is 12020465671. The next prime is 12020465771. The reversal of 12020465709 is 90756402021.

12020465709 is a `hidden beast` number, since 1 + 20 + 20 + 46 + 570 + 9 = 666.

It is not a de Polignac number, because 12020465709 - 2¹¹ = 12020463661 is a prime.

It is a super-2 number, since 2×12020465709² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020460709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95400459 + ... + 95400584.

It is an arithmetic number, because the mean of its divisors is an integer number (1653609048).

Almost surely, 2^12020465709 is an apocalyptic number.

It is an amenable number.

12020465709 is a deficient number, since it is larger than the sum of its proper divisors (7822842867).

12020465709 is a wasteful number, since it uses less digits than its factorization.

12020465709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190801056 (or 190801053 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 12020465709 in words is "twelve billion, twenty million, four hundred sixty-five thousand, seven hundred nine".