20706715707 has 8 divisors (see below), whose sum is σ = 27646317120. Its totient is φ = 13785795720.

The previous prime is 20706715681. The next prime is 20706715723. The reversal of 20706715707 is 70751760702.

It is a happy number.

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

It is not a de Polignac number, because 20706715707 - 2¹¹ = 20706713659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20706765707) 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, 4667769 + ... + 4672202.

It is an arithmetic number, because the mean of its divisors is an integer number (3455789640).

Almost surely, 2^20706715707 is an apocalyptic number.

20706715707 is a deficient number, since it is larger than the sum of its proper divisors (6939601413).

20706715707 is an equidigital number, since it uses as much as digits as its factorization.

20706715707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340713.

The product of its (nonzero) digits is 144060, while the sum is 42.

The spelling of 20706715707 in words is "twenty billion, seven hundred six million, seven hundred fifteen thousand, seven hundred seven".