20754046946897 has 16 divisors (see below), whose sum is σ = 24386640241920. Its totient is φ = 17458617430800.

The previous prime is 20754046946887. The next prime is 20754046946923. The reversal of 20754046946897 is 79864964045702.

It is a cyclic number.

It is not a de Polignac number, because 20754046946897 - 2³² = 20749751979601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20754046946897.

It is not an unprimeable number, because it can be changed into a prime (20754046946887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154661479 + ... + 1154679452.

It is an arithmetic number, because the mean of its divisors is an integer number (1524165015120).

Almost surely, 2^{20754046946897} is an apocalyptic number.

It is an amenable number.

20754046946897 is a deficient number, since it is larger than the sum of its proper divisors (3632593295023).

20754046946897 is a wasteful number, since it uses less digits than its factorization.

20754046946897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309341004.

The product of its (nonzero) digits is 731566080, while the sum is 71.

The spelling of 20754046946897 in words is "twenty trillion, seven hundred fifty-four billion, forty-six million, nine hundred forty-six thousand, eight hundred ninety-seven".