1403121205553 has 2 divisors, whose sum is σ = 1403121205554. Its totient is φ = 1403121205552.

The previous prime is 1403121205523. The next prime is 1403121205627. The reversal of 1403121205553 is 3555021213041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 932678857009 + 470442348544 = 965753^2 + 685888^2 .

It is a cyclic number.

It is not a de Polignac number, because 1403121205553 - 2²² = 1403117011249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1403121205523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701560602776 + 701560602777.

It is an arithmetic number, because the mean of its divisors is an integer number (701560602777).

Almost surely, 2^{1403121205553} is an apocalyptic number.

It is an amenable number.

1403121205553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403121205553 is an equidigital number, since it uses as much as digits as its factorization.

1403121205553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1403121205553 its reverse (3555021213041), we get a palindrome (4958142418594).

The spelling of 1403121205553 in words is "one trillion, four hundred three billion, one hundred twenty-one million, two hundred five thousand, five hundred fifty-three".