20465728079694 has 24 divisors (see below), whose sum is σ = 41047739271672. Its totient is φ = 6802583589120.

The previous prime is 20465728079689. The next prime is 20465728079737. The reversal of 20465728079694 is 49697082756402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12938977 + ... + 14434284.

It is an arithmetic number, because the mean of its divisors is an integer number (1710322469653).

Almost surely, 2^{20465728079694} is an apocalyptic number.

20465728079694 is an abundant number, since it is smaller than the sum of its proper divisors (20582011191978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20465728079694 is an equidigital number, since it uses as much as digits as its factorization.

20465728079694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27373972 (or 27373619 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 69.

The spelling of 20465728079694 in words is "twenty trillion, four hundred sixty-five billion, seven hundred twenty-eight million, seventy-nine thousand, six hundred ninety-four".