20945303785 has 16 divisors (see below), whose sum is σ = 28729766016. Its totient is φ = 14360105088.

The previous prime is 20945303777. The next prime is 20945303801. The reversal of 20945303785 is 58730354902.

It is not a de Polignac number, because 20945303785 - 2³ = 20945303777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178389 + ... + 271501.

It is an arithmetic number, because the mean of its divisors is an integer number (1795610376).

Almost surely, 2^20945303785 is an apocalyptic number.

It is an amenable number.

20945303785 is a deficient number, since it is larger than the sum of its proper divisors (7784462231).

20945303785 is an equidigital number, since it uses as much as digits as its factorization.

20945303785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99552.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 20945303785 in words is "twenty billion, nine hundred forty-five million, three hundred three thousand, seven hundred eighty-five".