1163550351421 has 2 divisors, whose sum is σ = 1163550351422. Its totient is φ = 1163550351420.

The previous prime is 1163550351377. The next prime is 1163550351461. The reversal of 1163550351421 is 1241530553611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637945651225 + 525604700196 = 798715^2 + 724986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163550351421 - 2³¹ = 1161402867773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163550351461) 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, 581775175710 + 581775175711.

It is an arithmetic number, because the mean of its divisors is an integer number (581775175711).

Almost surely, 2^{1163550351421} is an apocalyptic number.

It is an amenable number.

1163550351421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163550351421 is an equidigital number, since it uses as much as digits as its factorization.

1163550351421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 1163550351421 in words is "one trillion, one hundred sixty-three billion, five hundred fifty million, three hundred fifty-one thousand, four hundred twenty-one".