20335366697 has 4 divisors (see below), whose sum is σ = 21531564756. Its totient is φ = 19139168640.

The previous prime is 20335366637. The next prime is 20335366703. The reversal of 20335366697 is 79666353302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14719512976 + 5615853721 = 121324^2 + 74939^2 .

It is a cyclic number.

It is not a de Polignac number, because 20335366697 - 2⁶ = 20335366633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20335366637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598099004 + ... + 598099037.

It is an arithmetic number, because the mean of its divisors is an integer number (5382891189).

Almost surely, 2^20335366697 is an apocalyptic number.

It is an amenable number.

20335366697 is a deficient number, since it is larger than the sum of its proper divisors (1196198059).

20335366697 is a wasteful number, since it uses less digits than its factorization.

20335366697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196198058.

The product of its (nonzero) digits is 3674160, while the sum is 50.

The spelling of 20335366697 in words is "twenty billion, three hundred thirty-five million, three hundred sixty-six thousand, six hundred ninety-seven".