1103999660379 has 96 divisors (see below), whose sum is σ = 2005864473600. Its totient is φ = 568415232000.

The previous prime is 1103999660317. The next prime is 1103999660431. The reversal of 1103999660379 is 9730669993011.

1103999660379 is a `hidden beast` number, since 1 + 10 + 3 + 9 + 9 + 9 + 6 + 603 + 7 + 9 = 666.

It is not a de Polignac number, because 1103999660379 - 2⁸ = 1103999660123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1103999660879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46972959 + ... + 46996455.

It is an arithmetic number, because the mean of its divisors is an integer number (20894421600).

Almost surely, 2^{1103999660379} is an apocalyptic number.

1103999660379 is a deficient number, since it is larger than the sum of its proper divisors (901864813221).

1103999660379 is a wasteful number, since it uses less digits than its factorization.

1103999660379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24121 (or 24118 counting only the distinct ones).

The product of its (nonzero) digits is 14880348, while the sum is 63.

The spelling of 1103999660379 in words is "one trillion, one hundred three billion, nine hundred ninety-nine million, six hundred sixty thousand, three hundred seventy-nine".