20067406705 has 4 divisors (see below), whose sum is σ = 24080888052. Its totient is φ = 16053925360.

The previous prime is 20067406693. The next prime is 20067406717. The reversal of 20067406705 is 50760476002.

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

It is an interprime number because it is at equal distance from previous prime (20067406693) and next prime (20067406717).

It can be written as a sum of positive squares in 2 ways, for example, as 15829917489 + 4237489216 = 125817^2 + 65096^2 .

It is not a de Polignac number, because 20067406705 - 2⁹ = 20067406193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006740666 + ... + 2006740675.

It is an arithmetic number, because the mean of its divisors is an integer number (6020222013).

Almost surely, 2^20067406705 is an apocalyptic number.

It is an amenable number.

20067406705 is a deficient number, since it is larger than the sum of its proper divisors (4013481347).

20067406705 is an equidigital number, since it uses as much as digits as its factorization.

20067406705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013481346.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 20067406705 in words is "twenty billion, sixty-seven million, four hundred six thousand, seven hundred five".