1061815910399 has 2 divisors, whose sum is σ = 1061815910400. Its totient is φ = 1061815910398.

The previous prime is 1061815910321. The next prime is 1061815910437. The reversal of 1061815910399 is 9930195181601.

It is a strong prime.

It is an emirp because it is prime and its reverse (9930195181601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061815910399 - 2⁸ = 1061815910143 is a prime.

It is a super-2 number, since 2×1061815910399² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061815910399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061815910899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530907955199 + 530907955200.

It is an arithmetic number, because the mean of its divisors is an integer number (530907955200).

Almost surely, 2^{1061815910399} is an apocalyptic number.

1061815910399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061815910399 is an equidigital number, since it uses as much as digits as its factorization.

1061815910399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 53.

The spelling of 1061815910399 in words is "one trillion, sixty-one billion, eight hundred fifteen million, nine hundred ten thousand, three hundred ninety-nine".