20004290434549 has 2 divisors, whose sum is σ = 20004290434550. Its totient is φ = 20004290434548.

The previous prime is 20004290434537. The next prime is 20004290434561. The reversal of 20004290434549 is 94543409240002.

It is a balanced prime because it is at equal distance from previous prime (20004290434537) and next prime (20004290434561).

It can be written as a sum of positive squares in only one way, i.e., 19440074628100 + 564215806449 = 4409090^2 + 751143^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004290434549 - 2²³ = 20004282045941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20004290434499 and 20004290434508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004290434519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002145217274 + 10002145217275.

It is an arithmetic number, because the mean of its divisors is an integer number (10002145217275).

Almost surely, 2^{20004290434549} is an apocalyptic number.

It is an amenable number.

20004290434549 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004290434549 is an equidigital number, since it uses as much as digits as its factorization.

20004290434549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 20004290434549 in words is "twenty trillion, four billion, two hundred ninety million, four hundred thirty-four thousand, five hundred forty-nine".