20716758944787 has 16 divisors (see below), whose sum is σ = 27655246950912. Its totient is φ = 13794731417760.

The previous prime is 20716758944767. The next prime is 20716758944839. The reversal of 20716758944787 is 78744985761702.

It is not a de Polignac number, because 20716758944787 - 2⁷ = 20716758944659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20716758944767) 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, 7411713 + ... + 9816669.

It is an arithmetic number, because the mean of its divisors is an integer number (1728452934432).

Almost surely, 2^{20716758944787} is an apocalyptic number.

20716758944787 is a deficient number, since it is larger than the sum of its proper divisors (6938488006125).

20716758944787 is a wasteful number, since it uses less digits than its factorization.

20716758944787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408378.

The product of its (nonzero) digits is 1327656960, while the sum is 75.

The spelling of 20716758944787 in words is "twenty trillion, seven hundred sixteen billion, seven hundred fifty-eight million, nine hundred forty-four thousand, seven hundred eighty-seven".