1267040400407 has 2 divisors, whose sum is σ = 1267040400408. Its totient is φ = 1267040400406.

The previous prime is 1267040400401. The next prime is 1267040400469. The reversal of 1267040400407 is 7040040407621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1267040400407 - 2⁴ = 1267040400391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267040400401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633520200203 + 633520200204.

It is an arithmetic number, because the mean of its divisors is an integer number (633520200204).

Almost surely, 2^{1267040400407} is an apocalyptic number.

1267040400407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267040400407 is an equidigital number, since it uses as much as digits as its factorization.

1267040400407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 1267040400407 in words is "one trillion, two hundred sixty-seven billion, forty million, four hundred thousand, four hundred seven".