90151127281769 has 2 divisors, whose sum is σ = 90151127281770. Its totient is φ = 90151127281768.

The previous prime is 90151127281759. The next prime is 90151127281819. The reversal of 90151127281769 is 96718272115109.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85640125098025 + 4511002183744 = 9254195^2 + 2123912^2 .

It is a cyclic number.

It is not a de Polignac number, because 90151127281769 - 2⁴⁴ = 72558941237353 is a prime.

It is a super-2 number, since 2×90151127281769² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90151127281759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45075563640884 + 45075563640885.

It is an arithmetic number, because the mean of its divisors is an integer number (45075563640885).

Almost surely, 2^{90151127281769} is an apocalyptic number.

It is an amenable number.

90151127281769 is a deficient number, since it is larger than the sum of its proper divisors (1).

90151127281769 is an equidigital number, since it uses as much as digits as its factorization.

90151127281769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 59.

The spelling of 90151127281769 in words is "ninety trillion, one hundred fifty-one billion, one hundred twenty-seven million, two hundred eighty-one thousand, seven hundred sixty-nine".