20799517648299 has 16 divisors (see below), whose sum is σ = 29866098189312. Its totient is φ = 12799649969568.

The previous prime is 20799517648267. The next prime is 20799517648387. The reversal of 20799517648299 is 99284671599702.

It is not a de Polignac number, because 20799517648299 - 2⁵ = 20799517648267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20799517648099) 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, 9739462 + ... + 11681444.

It is an arithmetic number, because the mean of its divisors is an integer number (1866631136832).

Almost surely, 2^{20799517648299} is an apocalyptic number.

20799517648299 is a deficient number, since it is larger than the sum of its proper divisors (9066580541013).

20799517648299 is a wasteful number, since it uses less digits than its factorization.

20799517648299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216626.

The product of its (nonzero) digits is 1234517760, while the sum is 78.

The spelling of 20799517648299 in words is "twenty trillion, seven hundred ninety-nine billion, five hundred seventeen million, six hundred forty-eight thousand, two hundred ninety-nine".