126268902769 has 2 divisors, whose sum is σ = 126268902770. Its totient is φ = 126268902768.

The previous prime is 126268902757. The next prime is 126268902779. The reversal of 126268902769 is 967209862621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96417702144 + 29851200625 = 310512^2 + 172775^2 .

It is a cyclic number.

It is not a de Polignac number, because 126268902769 - 2¹⁷ = 126268771697 is a prime.

It is a super-2 number, since 2×126268902769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126268902779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63134451384 + 63134451385.

It is an arithmetic number, because the mean of its divisors is an integer number (63134451385).

Almost surely, 2^126268902769 is an apocalyptic number.

It is an amenable number.

126268902769 is a deficient number, since it is larger than the sum of its proper divisors (1).

126268902769 is an equidigital number, since it uses as much as digits as its factorization.

126268902769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 126268902769 in words is "one hundred twenty-six billion, two hundred sixty-eight million, nine hundred two thousand, seven hundred sixty-nine".