20616716607 has 8 divisors (see below), whose sum is σ = 27761123760. Its totient is φ = 13608393600.

The previous prime is 20616716581. The next prime is 20616716611. The reversal of 20616716607 is 70661761602.

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

It is not a de Polignac number, because 20616716607 - 2⁶ = 20616716543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616716657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34020682 + ... + 34021287.

It is an arithmetic number, because the mean of its divisors is an integer number (3470140470).

Almost surely, 2^20616716607 is an apocalyptic number.

20616716607 is a deficient number, since it is larger than the sum of its proper divisors (7144407153).

20616716607 is a wasteful number, since it uses less digits than its factorization.

20616716607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68042073.

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 20616716607 in words is "twenty billion, six hundred sixteen million, seven hundred sixteen thousand, six hundred seven".