20435070157 has 2 divisors, whose sum is σ = 20435070158. Its totient is φ = 20435070156.

The previous prime is 20435070143. The next prime is 20435070163. The reversal of 20435070157 is 75107053402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20420124201 + 14945956 = 142899^2 + 3866^2 .

It is a cyclic number.

It is not a de Polignac number, because 20435070157 - 2³¹ = 18287586509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20435070457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217535078 + 10217535079.

It is an arithmetic number, because the mean of its divisors is an integer number (10217535079).

Almost surely, 2^20435070157 is an apocalyptic number.

It is an amenable number.

20435070157 is a deficient number, since it is larger than the sum of its proper divisors (1).

20435070157 is an equidigital number, since it uses as much as digits as its factorization.

20435070157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The spelling of 20435070157 in words is "twenty billion, four hundred thirty-five million, seventy thousand, one hundred fifty-seven".