20703353416065 has 48 divisors (see below), whose sum is σ = 37146330421200. Its totient is φ = 10654410203136.

The previous prime is 20703353416027. The next prime is 20703353416079. The reversal of 20703353416065 is 56061435330702.

It is a happy number.

20703353416065 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 3 + 3 + 5 + 34 + 1 + 606 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3908101979664 + 16795251436401 = 1976892^2 + 4098201^2 .

It is not a de Polignac number, because 20703353416065 - 2⁷ = 20703353415937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20703353416065.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2830224 + ... + 7029713.

It is an arithmetic number, because the mean of its divisors is an integer number (773881883775).

Almost surely, 2^{20703353416065} is an apocalyptic number.

It is an amenable number.

20703353416065 is a deficient number, since it is larger than the sum of its proper divisors (16442977005135).

20703353416065 is a wasteful number, since it uses less digits than its factorization.

20703353416065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9861586 (or 9861583 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 45.

Adding to 20703353416065 its reverse (56061435330702), we get a palindrome (76764788746767).

The spelling of 20703353416065 in words is "twenty trillion, seven hundred three billion, three hundred fifty-three million, four hundred sixteen thousand, sixty-five".