20353368337 has 4 divisors (see below), whose sum is σ = 21550625316. Its totient is φ = 19156111360.

The previous prime is 20353368317. The next prime is 20353368383. The reversal of 20353368337 is 73386335302.

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 16544133376 + 3809234961 = 128624^2 + 61719^2 .

It is not a de Polignac number, because 20353368337 - 2⁷ = 20353368209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20353368293 and 20353368302.

It is not an unprimeable number, because it can be changed into a prime (20353368307) 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, 598628464 + ... + 598628497.

It is an arithmetic number, because the mean of its divisors is an integer number (5387656329).

Almost surely, 2^20353368337 is an apocalyptic number.

It is an amenable number.

20353368337 is a deficient number, since it is larger than the sum of its proper divisors (1197256979).

20353368337 is a wasteful number, since it uses less digits than its factorization.

20353368337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197256978.

The product of its (nonzero) digits is 816480, while the sum is 43.

The spelling of 20353368337 in words is "twenty billion, three hundred fifty-three million, three hundred sixty-eight thousand, three hundred thirty-seven".