20734706107 has 4 divisors (see below), whose sum is σ = 20737326456. Its totient is φ = 20732085760.

The previous prime is 20734706101. The next prime is 20734706119. The reversal of 20734706107 is 70160743702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20734706107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20734706101) 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, 1298269 + ... + 1314142.

It is an arithmetic number, because the mean of its divisors is an integer number (5184331614).

Almost surely, 2^20734706107 is an apocalyptic number.

20734706107 is a deficient number, since it is larger than the sum of its proper divisors (2620349).

20734706107 is an equidigital number, since it uses as much as digits as its factorization.

20734706107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620348.

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 20734706107 in words is "twenty billion, seven hundred thirty-four million, seven hundred six thousand, one hundred seven".