20773966403 has 2 divisors, whose sum is σ = 20773966404. Its totient is φ = 20773966402.

The previous prime is 20773966393. The next prime is 20773966439. The reversal of 20773966403 is 30466937702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20773966403 - 2¹⁰ = 20773965379 is a prime.

It is a super-2 number, since 2×20773966403² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20773966303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386983201 + 10386983202.

It is an arithmetic number, because the mean of its divisors is an integer number (10386983202).

Almost surely, 2^20773966403 is an apocalyptic number.

20773966403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20773966403 is an equidigital number, since it uses as much as digits as its factorization.

20773966403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 20773966403 in words is "twenty billion, seven hundred seventy-three million, nine hundred sixty-six thousand, four hundred three".