20894480713 has 2 divisors, whose sum is σ = 20894480714. Its totient is φ = 20894480712.

The previous prime is 20894480701. The next prime is 20894480723. The reversal of 20894480713 is 31708449802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20894124304 + 356409 = 144548^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 20894480713 - 2⁵ = 20894480681 is a prime.

It is not a weakly prime, because it can be changed into another prime (20894480723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10447240356 + 10447240357.

It is an arithmetic number, because the mean of its divisors is an integer number (10447240357).

Almost surely, 2^20894480713 is an apocalyptic number.

It is an amenable number.

20894480713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20894480713 is an equidigital number, since it uses as much as digits as its factorization.

20894480713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 20894480713 in words is "twenty billion, eight hundred ninety-four million, four hundred eighty thousand, seven hundred thirteen".