20353362808 has 64 divisors (see below), whose sum is σ = 39021212160. Its totient is φ = 9951171456.

The previous prime is 20353362787. The next prime is 20353362833. The reversal of 20353362808 is 80826335302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24730285 + ... + 24731107.

It is an arithmetic number, because the mean of its divisors is an integer number (609706440).

Almost surely, 2^20353362808 is an apocalyptic number.

It is an amenable number.

20353362808 is a deficient number, since it is larger than the sum of its proper divisors (18667849352).

20353362808 is a wasteful number, since it uses less digits than its factorization.

20353362808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

It can be divided in two parts, 20353 and 362808, that added together give a square (383161 = 619²).

The spelling of 20353362808 in words is "twenty billion, three hundred fifty-three million, three hundred sixty-two thousand, eight hundred eight".