20009126470357 has 2 divisors, whose sum is σ = 20009126470358. Its totient is φ = 20009126470356.

The previous prime is 20009126470349. The next prime is 20009126470363. The reversal of 20009126470357 is 75307462190002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17555144692996 + 2453981777361 = 4189886^2 + 1566519^2 .

It is a cyclic number.

It is not a de Polignac number, because 20009126470357 - 2³ = 20009126470349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20009126470457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004563235178 + 10004563235179.

It is an arithmetic number, because the mean of its divisors is an integer number (10004563235179).

Almost surely, 2^{20009126470357} is an apocalyptic number.

It is an amenable number.

20009126470357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20009126470357 is an equidigital number, since it uses as much as digits as its factorization.

20009126470357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 20009126470357 in words is "twenty trillion, nine billion, one hundred twenty-six million, four hundred seventy thousand, three hundred fifty-seven".