20344510251259 has 2 divisors, whose sum is σ = 20344510251260. Its totient is φ = 20344510251258.

The previous prime is 20344510251253. The next prime is 20344510251313. The reversal of 20344510251259 is 95215201544302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20344510251259 - 2¹¹ = 20344510249211 is a prime.

It is a super-2 number, since 2×20344510251259² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20344510251253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172255125629 + 10172255125630.

It is an arithmetic number, because the mean of its divisors is an integer number (10172255125630).

Almost surely, 2^{20344510251259} is an apocalyptic number.

20344510251259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344510251259 is an equidigital number, since it uses as much as digits as its factorization.

20344510251259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 20344510251259 in words is "twenty trillion, three hundred forty-four billion, five hundred ten million, two hundred fifty-one thousand, two hundred fifty-nine".