1001117015797 has 2 divisors, whose sum is σ = 1001117015798. Its totient is φ = 1001117015796.

The previous prime is 1001117015783. The next prime is 1001117015809. The reversal of 1001117015797 is 7975107111001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648796419441 + 352320596356 = 805479^2 + 593566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001117015797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001117015497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500558507898 + 500558507899.

It is an arithmetic number, because the mean of its divisors is an integer number (500558507899).

Almost surely, 2^{1001117015797} is an apocalyptic number.

It is an amenable number.

1001117015797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001117015797 is an equidigital number, since it uses as much as digits as its factorization.

1001117015797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15435, while the sum is 40.

The spelling of 1001117015797 in words is "one trillion, one billion, one hundred seventeen million, fifteen thousand, seven hundred ninety-seven".