20770043365 has 8 divisors (see below), whose sum is σ = 25053193368. Its totient is φ = 16529940480.

The previous prime is 20770043317. The next prime is 20770043389. The reversal of 20770043365 is 56334007702.

It can be written as a sum of positive squares in 4 ways, for example, as 870427009 + 19899616356 = 29503^2 + 141066^2 .

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

It is not a de Polignac number, because 20770043365 - 2⁷ = 20770043237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10760716 + ... + 10762645.

It is an arithmetic number, because the mean of its divisors is an integer number (3131649171).

Almost surely, 2^20770043365 is an apocalyptic number.

It is an amenable number.

20770043365 is a deficient number, since it is larger than the sum of its proper divisors (4283150003).

20770043365 is a wasteful number, since it uses less digits than its factorization.

20770043365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523559.

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 20770043365 in words is "twenty billion, seven hundred seventy million, forty-three thousand, three hundred sixty-five".