1023722387497 has 2 divisors, whose sum is σ = 1023722387498. Its totient is φ = 1023722387496.

The previous prime is 1023722387411. The next prime is 1023722387503. The reversal of 1023722387497 is 7947832273201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518970396816 + 504751990681 = 720396^2 + 710459^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023722387497 - 2¹¹ = 1023722385449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023722382497) 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, 511861193748 + 511861193749.

It is an arithmetic number, because the mean of its divisors is an integer number (511861193749).

Almost surely, 2^{1023722387497} is an apocalyptic number.

It is an amenable number.

1023722387497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023722387497 is an equidigital number, since it uses as much as digits as its factorization.

1023722387497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 1023722387497 in words is "one trillion, twenty-three billion, seven hundred twenty-two million, three hundred eighty-seven thousand, four hundred ninety-seven".