1540126665047 has 2 divisors, whose sum is σ = 1540126665048. Its totient is φ = 1540126665046.

The previous prime is 1540126665031. The next prime is 1540126665067. The reversal of 1540126665047 is 7405666210451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1540126665047 - 2⁴ = 1540126665031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1540126664992 and 1540126665010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540126665067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770063332523 + 770063332524.

It is an arithmetic number, because the mean of its divisors is an integer number (770063332524).

Almost surely, 2^{1540126665047} is an apocalyptic number.

1540126665047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540126665047 is an equidigital number, since it uses as much as digits as its factorization.

1540126665047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 1540126665047 in words is "one trillion, five hundred forty billion, one hundred twenty-six million, six hundred sixty-five thousand, forty-seven".