20705700001 has 16 divisors (see below), whose sum is σ = 25638332544. Its totient is φ = 16315294464.

The previous prime is 20705699951. The next prime is 20705700011. The reversal of 20705700001 is 10000750702.

It is not a de Polignac number, because 20705700001 - 2⁷ = 20705699873 is a prime.

It is a super-2 number, since 2×20705700001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20705700011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2018110 + ... + 2028343.

It is an arithmetic number, because the mean of its divisors is an integer number (1602395784).

Almost surely, 2^20705700001 is an apocalyptic number.

It is an amenable number.

20705700001 is a deficient number, since it is larger than the sum of its proper divisors (4932632543).

20705700001 is a wasteful number, since it uses less digits than its factorization.

20705700001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046520.

The product of its (nonzero) digits is 490, while the sum is 22.

The spelling of 20705700001 in words is "twenty billion, seven hundred five million, seven hundred thousand, one".