20085065439829 has 16 divisors (see below), whose sum is σ = 22905488406528. Its totient is φ = 17447136544512.

The previous prime is 20085065439809. The next prime is 20085065439851. The reversal of 20085065439829 is 92893456058002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20085065439829 - 2¹¹ = 20085065437781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085065439809) 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, 4414737 + ... + 7723990.

It is an arithmetic number, because the mean of its divisors is an integer number (1431593025408).

Almost surely, 2^{20085065439829} is an apocalyptic number.

It is an amenable number.

20085065439829 is a deficient number, since it is larger than the sum of its proper divisors (2820422966699).

20085065439829 is a wasteful number, since it uses less digits than its factorization.

20085065439829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12146244.

The product of its (nonzero) digits is 37324800, while the sum is 61.

The spelling of 20085065439829 in words is "twenty trillion, eighty-five billion, sixty-five million, four hundred thirty-nine thousand, eight hundred twenty-nine".