1266266654407 has 2 divisors, whose sum is σ = 1266266654408. Its totient is φ = 1266266654406.

The previous prime is 1266266654287. The next prime is 1266266654431. The reversal of 1266266654407 is 7044566626621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266266654407 - 2¹⁵ = 1266266621639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266266654507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633133327203 + 633133327204.

It is an arithmetic number, because the mean of its divisors is an integer number (633133327204).

Almost surely, 2^{1266266654407} is an apocalyptic number.

1266266654407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266266654407 is an equidigital number, since it uses as much as digits as its factorization.

1266266654407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 1266266654407 in words is "one trillion, two hundred sixty-six billion, two hundred sixty-six million, six hundred fifty-four thousand, four hundred seven".