20353510516 has 12 divisors (see below), whose sum is σ = 35620020100. Its totient is φ = 10176361920.

The previous prime is 20353510511. The next prime is 20353510531. The reversal of 20353510516 is 61501535302.

It can be written as a sum of positive squares in 2 ways, for example, as 1033622500 + 19319888016 = 32150^2 + 138996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20353510511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39586 + ... + 205606.

Almost surely, 2^20353510516 is an apocalyptic number.

It is an amenable number.

20353510516 is a deficient number, since it is larger than the sum of its proper divisors (15266509584).

20353510516 is a wasteful number, since it uses less digits than its factorization.

20353510516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196674 (or 196672 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 20353510516 in words is "twenty billion, three hundred fifty-three million, five hundred ten thousand, five hundred sixteen".