1023156315469 has 2 divisors, whose sum is σ = 1023156315470. Its totient is φ = 1023156315468.

The previous prime is 1023156315451. The next prime is 1023156315479. The reversal of 1023156315469 is 9645136513201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988159259844 + 34997055625 = 994062^2 + 187075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023156315469 is a prime.

It is a super-2 number, since 2×1023156315469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023156315479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511578157734 + 511578157735.

It is an arithmetic number, because the mean of its divisors is an integer number (511578157735).

Almost surely, 2^{1023156315469} is an apocalyptic number.

It is an amenable number.

1023156315469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023156315469 is an equidigital number, since it uses as much as digits as its factorization.

1023156315469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 1023156315469 in words is "one trillion, twenty-three billion, one hundred fifty-six million, three hundred fifteen thousand, four hundred sixty-nine".