1024138815641 has 2 divisors, whose sum is σ = 1024138815642. Its totient is φ = 1024138815640.

The previous prime is 1024138815611. The next prime is 1024138815647. The reversal of 1024138815641 is 1465188314201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978854975641 + 45283840000 = 989371^2 + 212800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1024138815641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1024138815592 and 1024138815601.

It is not a weakly prime, because it can be changed into another prime (1024138815647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512069407820 + 512069407821.

It is an arithmetic number, because the mean of its divisors is an integer number (512069407821).

Almost surely, 2^{1024138815641} is an apocalyptic number.

It is an amenable number.

1024138815641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024138815641 is an equidigital number, since it uses as much as digits as its factorization.

1024138815641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 1024138815641 in words is "one trillion, twenty-four billion, one hundred thirty-eight million, eight hundred fifteen thousand, six hundred forty-one".