20368885337 has 2 divisors, whose sum is σ = 20368885338. Its totient is φ = 20368885336.

The previous prime is 20368885309. The next prime is 20368885349. The reversal of 20368885337 is 73358886302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19171448521 + 1197436816 = 138461^2 + 34604^2 .

It is a cyclic number.

It is not a de Polignac number, because 20368885337 - 2¹⁰ = 20368884313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20368885357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184442668 + 10184442669.

It is an arithmetic number, because the mean of its divisors is an integer number (10184442669).

Almost surely, 2^20368885337 is an apocalyptic number.

It is an amenable number.

20368885337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20368885337 is an equidigital number, since it uses as much as digits as its factorization.

20368885337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 20368885337 in words is "twenty billion, three hundred sixty-eight million, eight hundred eighty-five thousand, three hundred thirty-seven".