20330020157 has 2 divisors, whose sum is σ = 20330020158. Its totient is φ = 20330020156.

The previous prime is 20330020103. The next prime is 20330020201. The reversal of 20330020157 is 75102003302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17022159961 + 3307860196 = 130469^2 + 57514^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330020157 - 2¹² = 20330016061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330020357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165010078 + 10165010079.

It is an arithmetic number, because the mean of its divisors is an integer number (10165010079).

Almost surely, 2^20330020157 is an apocalyptic number.

It is an amenable number.

20330020157 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330020157 is an equidigital number, since it uses as much as digits as its factorization.

20330020157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 23.

Adding to 20330020157 its reverse (75102003302), we get a palindrome (95432023459).

The spelling of 20330020157 in words is "twenty billion, three hundred thirty million, twenty thousand, one hundred fifty-seven".