126028357669 has 2 divisors, whose sum is σ = 126028357670. Its totient is φ = 126028357668.

The previous prime is 126028357657. The next prime is 126028357691. The reversal of 126028357669 is 966753820621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124221002500 + 1807355169 = 352450^2 + 42513^2 .

It is a cyclic number.

It is not a de Polignac number, because 126028357669 - 2²⁵ = 125994803237 is a prime.

It is a super-2 number, since 2×126028357669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126028357619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63014178834 + 63014178835.

It is an arithmetic number, because the mean of its divisors is an integer number (63014178835).

Almost surely, 2^126028357669 is an apocalyptic number.

It is an amenable number.

126028357669 is a deficient number, since it is larger than the sum of its proper divisors (1).

126028357669 is an equidigital number, since it uses as much as digits as its factorization.

126028357669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 126028357669 in words is "one hundred twenty-six billion, twenty-eight million, three hundred fifty-seven thousand, six hundred sixty-nine".