1045653320381 has 2 divisors, whose sum is σ = 1045653320382. Its totient is φ = 1045653320380.

The previous prime is 1045653320353. The next prime is 1045653320597. The reversal of 1045653320381 is 1830233565401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535370256100 + 510283064281 = 731690^2 + 714341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045653320381 - 2¹⁴ = 1045653303997 is a prime.

It is a super-2 number, since 2×1045653320381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045653320321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522826660190 + 522826660191.

It is an arithmetic number, because the mean of its divisors is an integer number (522826660191).

Almost surely, 2^{1045653320381} is an apocalyptic number.

It is an amenable number.

1045653320381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045653320381 is an equidigital number, since it uses as much as digits as its factorization.

1045653320381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 1045653320381 its reverse (1830233565401), we get a palindrome (2875886885782).

The spelling of 1045653320381 in words is "one trillion, forty-five billion, six hundred fifty-three million, three hundred twenty thousand, three hundred eighty-one".