20354206516502 has 8 divisors (see below), whose sum is σ = 30531329545536. Its totient is φ = 10177096667992.

The previous prime is 20354206516403. The next prime is 20354206516507. The reversal of 20354206516502 is 20561560245302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20354206516502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354206516507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2879963 + ... + 7000185.

It is an arithmetic number, because the mean of its divisors is an integer number (3816416193192).

Almost surely, 2^{20354206516502} is an apocalyptic number.

20354206516502 is a deficient number, since it is larger than the sum of its proper divisors (10177123029034).

20354206516502 is a wasteful number, since it uses less digits than its factorization.

20354206516502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590262.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 20354206516502 in words is "twenty trillion, three hundred fifty-four billion, two hundred six million, five hundred sixteen thousand, five hundred two".