20785303919 has 2 divisors, whose sum is σ = 20785303920. Its totient is φ = 20785303918.

The previous prime is 20785303883. The next prime is 20785303937. The reversal of 20785303919 is 91930358702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20785303919 - 2²⁰ = 20784255343 is a prime.

It is a super-2 number, since 2×20785303919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20785303969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10392651959 + 10392651960.

It is an arithmetic number, because the mean of its divisors is an integer number (10392651960).

Almost surely, 2^20785303919 is an apocalyptic number.

20785303919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20785303919 is an equidigital number, since it uses as much as digits as its factorization.

20785303919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 20785303919 in words is "twenty billion, seven hundred eighty-five million, three hundred three thousand, nine hundred nineteen".