20773431606434 has 32 divisors (see below), whose sum is σ = 34223628600000. Its totient is φ = 9398226993984.

The previous prime is 20773431606371. The next prime is 20773431606439. The reversal of 20773431606434 is 43460613437702.

It is not an unprimeable number, because it can be changed into a prime (20773431606439) 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, 18865784 + ... + 19936515.

It is an arithmetic number, because the mean of its divisors is an integer number (1069488393750).

Almost surely, 2^{20773431606434} is an apocalyptic number.

20773431606434 is a deficient number, since it is larger than the sum of its proper divisors (13450196993566).

20773431606434 is a wasteful number, since it uses less digits than its factorization.

20773431606434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38802722.

The product of its (nonzero) digits is 6096384, while the sum is 50.

The spelling of 20773431606434 in words is "twenty trillion, seven hundred seventy-three billion, four hundred thirty-one million, six hundred six thousand, four hundred thirty-four".