1026994399117 has 2 divisors, whose sum is σ = 1026994399118. Its totient is φ = 1026994399116.

The previous prime is 1026994399087. The next prime is 1026994399201. The reversal of 1026994399117 is 7119934996201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567271074276 + 459723324841 = 753174^2 + 678029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1026994399117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026994390117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513497199558 + 513497199559.

It is an arithmetic number, because the mean of its divisors is an integer number (513497199559).

Almost surely, 2^{1026994399117} is an apocalyptic number.

It is an amenable number.

1026994399117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026994399117 is an equidigital number, since it uses as much as digits as its factorization.

1026994399117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 61.

The spelling of 1026994399117 in words is "one trillion, twenty-six billion, nine hundred ninety-four million, three hundred ninety-nine thousand, one hundred seventeen".