1402312043557 has 2 divisors, whose sum is σ = 1402312043558. Its totient is φ = 1402312043556.

The previous prime is 1402312043549. The next prime is 1402312043579. The reversal of 1402312043557 is 7553402132041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1231287613956 + 171024429601 = 1109634^2 + 413551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402312043557 - 2³ = 1402312043549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402312043507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701156021778 + 701156021779.

It is an arithmetic number, because the mean of its divisors is an integer number (701156021779).

Almost surely, 2^{1402312043557} is an apocalyptic number.

It is an amenable number.

1402312043557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402312043557 is an equidigital number, since it uses as much as digits as its factorization.

1402312043557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

Adding to 1402312043557 its reverse (7553402132041), we get a palindrome (8955714175598).

The spelling of 1402312043557 in words is "one trillion, four hundred two billion, three hundred twelve million, forty-three thousand, five hundred fifty-seven".