20505093116 has 12 divisors (see below), whose sum is σ = 37994731488. Its totient is φ = 9649455552.

The previous prime is 20505093053. The next prime is 20505093149. The reversal of 20505093116 is 61139050502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150772676 + ... + 150772811.

It is an arithmetic number, because the mean of its divisors is an integer number (3166227624).

Almost surely, 2^20505093116 is an apocalyptic number.

It is an amenable number.

20505093116 is a deficient number, since it is larger than the sum of its proper divisors (17489638372).

20505093116 is a wasteful number, since it uses less digits than its factorization.

20505093116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301545508 (or 301545506 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 20505093116 in words is "twenty billion, five hundred five million, ninety-three thousand, one hundred sixteen".