20780773223 has 16 divisors (see below), whose sum is σ = 24606884160. Its totient is φ = 17170944000.

The previous prime is 20780773201. The next prime is 20780773231. The reversal of 20780773223 is 32237708702.

It is not a de Polignac number, because 20780773223 - 2¹² = 20780769127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20780773283) 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, 50273 + ... + 209973.

It is an arithmetic number, because the mean of its divisors is an integer number (1537930260).

Almost surely, 2^20780773223 is an apocalyptic number.

20780773223 is a deficient number, since it is larger than the sum of its proper divisors (3826110937).

20780773223 is a wasteful number, since it uses less digits than its factorization.

20780773223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160378.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 20780773223 in words is "twenty billion, seven hundred eighty million, seven hundred seventy-three thousand, two hundred twenty-three".