20647141746064 has 40 divisors (see below), whose sum is σ = 40580608478400. Its totient is φ = 10175696327808.

The previous prime is 20647141746059. The next prime is 20647141746067. The reversal of 20647141746064 is 46064714174602.

It is not an unprimeable number, because it can be changed into a prime (20647141746067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29961439 + ... + 30642814.

It is an arithmetic number, because the mean of its divisors is an integer number (1014515211960).

Almost surely, 2^{20647141746064} is an apocalyptic number.

It is an amenable number.

20647141746064 is a deficient number, since it is larger than the sum of its proper divisors (19933466732336).

20647141746064 is a wasteful number, since it uses less digits than its factorization.

20647141746064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60604567 (or 60604561 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 20647141746064 in words is "twenty trillion, six hundred forty-seven billion, one hundred forty-one million, seven hundred forty-six thousand, sixty-four".