20710606207 has 4 divisors (see below), whose sum is σ = 20915661816. Its totient is φ = 20505550600.

The previous prime is 20710606177. The next prime is 20710606297. The reversal of 20710606207 is 70260601702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70260601702 = 2 ⋅35130300851.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20710606207 is a prime.

It is a super-2 number, since 2×20710606207² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710606297) 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, 102527653 + ... + 102527854.

It is an arithmetic number, because the mean of its divisors is an integer number (5228915454).

Almost surely, 2^20710606207 is an apocalyptic number.

20710606207 is a deficient number, since it is larger than the sum of its proper divisors (205055609).

20710606207 is a wasteful number, since it uses less digits than its factorization.

20710606207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205055608.

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 20710606207 in words is "twenty billion, seven hundred ten million, six hundred six thousand, two hundred seven".