1267481930639 has 2 divisors, whose sum is σ = 1267481930640. Its totient is φ = 1267481930638.

The previous prime is 1267481930593. The next prime is 1267481930653. The reversal of 1267481930639 is 9360391847621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1267481930639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267481930669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633740965319 + 633740965320.

It is an arithmetic number, because the mean of its divisors is an integer number (633740965320).

Almost surely, 2^{1267481930639} is an apocalyptic number.

1267481930639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267481930639 is an equidigital number, since it uses as much as digits as its factorization.

1267481930639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 1267481930639 in words is "one trillion, two hundred sixty-seven billion, four hundred eighty-one million, nine hundred thirty thousand, six hundred thirty-nine".