20485094399 has 24 divisors (see below), whose sum is σ = 26064777600. Its totient is φ = 15920135280.

The previous prime is 20485094369. The next prime is 20485094419. The reversal of 20485094399 is 99349058402.

It is not a de Polignac number, because 20485094399 - 2⁸ = 20485094143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20485094399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20485094339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154142 + ... + 254420.

It is an arithmetic number, because the mean of its divisors is an integer number (1086032400).

Almost surely, 2^20485094399 is an apocalyptic number.

20485094399 is a deficient number, since it is larger than the sum of its proper divisors (5579683201).

20485094399 is a wasteful number, since it uses less digits than its factorization.

20485094399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100683 (or 100676 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 20485094399 in words is "twenty billion, four hundred eighty-five million, ninety-four thousand, three hundred ninety-nine".