20263858554709 has 32 divisors (see below), whose sum is σ = 25361697816576. Its totient is φ = 15728985803520.

The previous prime is 20263858554691. The next prime is 20263858554721. The reversal of 20263858554709 is 90745585836202.

It is not a de Polignac number, because 20263858554709 - 2²¹ = 20263856457557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20263858554749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609477724 + ... + 609510970.

It is an arithmetic number, because the mean of its divisors is an integer number (792553056768).

Almost surely, 2^{20263858554709} is an apocalyptic number.

It is an amenable number.

20263858554709 is a deficient number, since it is larger than the sum of its proper divisors (5097839261867).

20263858554709 is a wasteful number, since it uses less digits than its factorization.

20263858554709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63625.

The product of its (nonzero) digits is 145152000, while the sum is 64.

The spelling of 20263858554709 in words is "twenty trillion, two hundred sixty-three billion, eight hundred fifty-eight million, five hundred fifty-four thousand, seven hundred nine".