20345030456287 has 2 divisors, whose sum is σ = 20345030456288. Its totient is φ = 20345030456286.

The previous prime is 20345030456279. The next prime is 20345030456371. The reversal of 20345030456287 is 78265403054302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20345030456287 - 2³ = 20345030456279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20345030456287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345030456227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172515228143 + 10172515228144.

It is an arithmetic number, because the mean of its divisors is an integer number (10172515228144).

Almost surely, 2^{20345030456287} is an apocalyptic number.

20345030456287 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345030456287 is an equidigital number, since it uses as much as digits as its factorization.

20345030456287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 20345030456287 in words is "twenty trillion, three hundred forty-five billion, thirty million, four hundred fifty-six thousand, two hundred eighty-seven".