1540126665067 has 2 divisors, whose sum is σ = 1540126665068. Its totient is φ = 1540126665066.

The previous prime is 1540126665047. The next prime is 1540126665083. The reversal of 1540126665067 is 7605666210451.

It is a strong prime.

It is an emirp because it is prime and its reverse (7605666210451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540126665067 - 2¹⁹ = 1540126140779 is a prime.

It is a super-2 number, since 2×1540126665067² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1540126665067.

It is not a weakly prime, because it can be changed into another prime (1540126665047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770063332533 + 770063332534.

It is an arithmetic number, because the mean of its divisors is an integer number (770063332534).

Almost surely, 2^{1540126665067} is an apocalyptic number.

1540126665067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540126665067 is an equidigital number, since it uses as much as digits as its factorization.

1540126665067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 1540126665067 in words is "one trillion, five hundred forty billion, one hundred twenty-six million, six hundred sixty-five thousand, sixty-seven".