20006394697 has 8 divisors (see below), whose sum is σ = 20306849472. Its totient is φ = 19706458800.

The previous prime is 20006394677. The next prime is 20006394713. The reversal of 20006394697 is 79649360002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20006394697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006394607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51678 + ... + 206599.

It is an arithmetic number, because the mean of its divisors is an integer number (2538356184).

Almost surely, 2^20006394697 is an apocalyptic number.

It is an amenable number.

20006394697 is a deficient number, since it is larger than the sum of its proper divisors (300454775).

20006394697 is a wasteful number, since it uses less digits than its factorization.

20006394697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259439.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 20006394697 in words is "twenty billion, six million, three hundred ninety-four thousand, six hundred ninety-seven".