20061709452 has 96 divisors (see below), whose sum is σ = 55107440640. Its totient is φ = 6289747200.

The previous prime is 20061709439. The next prime is 20061709457. The reversal of 20061709452 is 25490716002.

It is a super-2 number, since 2×20061709452² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20061709457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4049577 + ... + 4054527.

It is an arithmetic number, because the mean of its divisors is an integer number (574035840).

Almost surely, 2^20061709452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20061709452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27553720320).

20061709452 is an abundant number, since it is smaller than the sum of its proper divisors (35045731188).

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

20061709452 is a wasteful number, since it uses less digits than its factorization.

20061709452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188 (or 7180 counting only the distinct ones).

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

The spelling of 20061709452 in words is "twenty billion, sixty-one million, seven hundred nine thousand, four hundred fifty-two".