1051164665641 has 2 divisors, whose sum is σ = 1051164665642. Its totient is φ = 1051164665640.

The previous prime is 1051164665633. The next prime is 1051164665651. The reversal of 1051164665641 is 1465664611501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937403494416 + 113761171225 = 968196^2 + 337285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051164665641 - 2³ = 1051164665633 is a prime.

It is a super-2 number, since 2×1051164665641² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051164665591 and 1051164665600.

It is not a weakly prime, because it can be changed into another prime (1051164665611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525582332820 + 525582332821.

It is an arithmetic number, because the mean of its divisors is an integer number (525582332821).

Almost surely, 2^{1051164665641} is an apocalyptic number.

It is an amenable number.

1051164665641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051164665641 is an equidigital number, since it uses as much as digits as its factorization.

1051164665641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 1051164665641 in words is "one trillion, fifty-one billion, one hundred sixty-four million, six hundred sixty-five thousand, six hundred forty-one".