1523420243291 has 2 divisors, whose sum is σ = 1523420243292. Its totient is φ = 1523420243290.

The previous prime is 1523420243237. The next prime is 1523420243311. The reversal of 1523420243291 is 1923420243251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1523420243291 - 2¹⁴ = 1523420226907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523420243231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761710121645 + 761710121646.

It is an arithmetic number, because the mean of its divisors is an integer number (761710121646).

Almost surely, 2^{1523420243291} is an apocalyptic number.

1523420243291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523420243291 is an equidigital number, since it uses as much as digits as its factorization.

1523420243291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1523420243291 in words is "one trillion, five hundred twenty-three billion, four hundred twenty million, two hundred forty-three thousand, two hundred ninety-one".