20784465740697 has 16 divisors (see below), whose sum is σ = 28228237836480. Its totient is φ = 13600878184512.

The previous prime is 20784465740629. The next prime is 20784465740741. The reversal of 20784465740697 is 79604756448702.

It is not a de Polignac number, because 20784465740697 - 2¹⁰ = 20784465739673 is a prime.

It is a super-2 number, since 2×20784465740697² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20784465740197) 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, 296979298 + ... + 297049275.

It is an arithmetic number, because the mean of its divisors is an integer number (1764264864780).

Almost surely, 2^{20784465740697} is an apocalyptic number.

It is an amenable number.

20784465740697 is a deficient number, since it is larger than the sum of its proper divisors (7443772095783).

20784465740697 is a wasteful number, since it uses less digits than its factorization.

20784465740697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594028792.

The product of its (nonzero) digits is 568995840, while the sum is 69.

The spelling of 20784465740697 in words is "twenty trillion, seven hundred eighty-four billion, four hundred sixty-five million, seven hundred forty thousand, six hundred ninety-seven".