20843000707 has 4 divisors (see below), whose sum is σ = 20845719856. Its totient is φ = 20840281560.

The previous prime is 20843000681. The next prime is 20843000743. The reversal of 20843000707 is 70700034802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70700034802 = 2 ⋅35350017401.

It is a cyclic number.

It is not a de Polignac number, because 20843000707 - 2³¹ = 18695517059 is a prime.

It is a pancake number, because a pancake can be divided into 20843000707 parts by 204171 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20843010707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348044 + ... + 1363417.

It is an arithmetic number, because the mean of its divisors is an integer number (5211429964).

Almost surely, 2^20843000707 is an apocalyptic number.

20843000707 is a deficient number, since it is larger than the sum of its proper divisors (2719149).

20843000707 is an equidigital number, since it uses as much as digits as its factorization.

20843000707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719148.

The product of its (nonzero) digits is 9408, while the sum is 31.

The spelling of 20843000707 in words is "twenty billion, eight hundred forty-three million, seven hundred seven", and thus it is an aban number.