20151044342269 has 2 divisors, whose sum is σ = 20151044342270. Its totient is φ = 20151044342268.

The previous prime is 20151044342131. The next prime is 20151044342279. The reversal of 20151044342269 is 96224344015102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15359266428100 + 4791777914169 = 3919090^2 + 2189013^2 .

It is a cyclic number.

It is not a de Polignac number, because 20151044342269 - 2¹¹ = 20151044340221 is a prime.

It is a super-2 number, since 2×20151044342269² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20151044342279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075522171134 + 10075522171135.

It is an arithmetic number, because the mean of its divisors is an integer number (10075522171135).

Almost surely, 2^{20151044342269} is an apocalyptic number.

It is an amenable number.

20151044342269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20151044342269 is an equidigital number, since it uses as much as digits as its factorization.

20151044342269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20151044342269 in words is "twenty trillion, one hundred fifty-one billion, forty-four million, three hundred forty-two thousand, two hundred sixty-nine".