20704180768815 has 8 divisors (see below), whose sum is σ = 33126689230128. Its totient is φ = 11042229743360.

The previous prime is 20704180768763. The next prime is 20704180768819. The reversal of 20704180768815 is 51886708140702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20704180768815 - 2⁶ = 20704180768751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704180768819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690139358946 + ... + 690139358975.

It is an arithmetic number, because the mean of its divisors is an integer number (4140836153766).

Almost surely, 2^{20704180768815} is an apocalyptic number.

20704180768815 is a deficient number, since it is larger than the sum of its proper divisors (12422508461313).

20704180768815 is a wasteful number, since it uses less digits than its factorization.

20704180768815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380278717929.

The product of its (nonzero) digits is 6021120, while the sum is 57.

The spelling of 20704180768815 in words is "twenty trillion, seven hundred four billion, one hundred eighty million, seven hundred sixty-eight thousand, eight hundred fifteen".