1001361115663 has 16 divisors (see below), whose sum is σ = 1095028899840. Its totient is φ = 911587248000.

The previous prime is 1001361115649. The next prime is 1001361115673. The reversal of 1001361115663 is 3665111631001.

It is a cyclic number.

It is not a de Polignac number, because 1001361115663 - 2¹³ = 1001361107471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001361115613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541218 + ... + 1515136.

It is an arithmetic number, because the mean of its divisors is an integer number (68439306240).

Almost surely, 2^{1001361115663} is an apocalyptic number.

1001361115663 is a deficient number, since it is larger than the sum of its proper divisors (93667784177).

1001361115663 is a wasteful number, since it uses less digits than its factorization.

1001361115663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975918.

The product of its (nonzero) digits is 9720, while the sum is 34.

Adding to 1001361115663 its reverse (3665111631001), we get a palindrome (4666472746664).

The spelling of 1001361115663 in words is "one trillion, one billion, three hundred sixty-one million, one hundred fifteen thousand, six hundred sixty-three".