20716610803 has 8 divisors (see below), whose sum is σ = 24922238720. Its totient is φ = 16822510920.

The previous prime is 20716610773. The next prime is 20716610809. The reversal of 20716610803 is 30801661702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20716610803 is a prime.

It is a super-3 number, since 3×20716610803³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20716610809) 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 7 ways as a sum of consecutive naturals, for example, 77881863 + ... + 77882128.

It is an arithmetic number, because the mean of its divisors is an integer number (3115279840).

Almost surely, 2^20716610803 is an apocalyptic number.

20716610803 is a deficient number, since it is larger than the sum of its proper divisors (4205627917).

20716610803 is a wasteful number, since it uses less digits than its factorization.

20716610803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155764017.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 20716610803 in words is "twenty billion, seven hundred sixteen million, six hundred ten thousand, eight hundred three".