20004145529 has 2 divisors, whose sum is σ = 20004145530. Its totient is φ = 20004145528.

The previous prime is 20004145523. The next prime is 20004145561. The reversal of 20004145529 is 92554140002.

It is an a-pointer prime, because the next prime (20004145561) can be obtained adding 20004145529 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10716390400 + 9287755129 = 103520^2 + 96373^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004145529 - 2¹² = 20004141433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20004145495 and 20004145504.

It is not a weakly prime, because it can be changed into another prime (20004145523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002072764 + 10002072765.

It is an arithmetic number, because the mean of its divisors is an integer number (10002072765).

Almost surely, 2^20004145529 is an apocalyptic number.

It is an amenable number.

20004145529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004145529 is an equidigital number, since it uses as much as digits as its factorization.

20004145529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 20004145529 in words is "twenty billion, four million, one hundred forty-five thousand, five hundred twenty-nine".