9994055555505 has 32 divisors (see below), whose sum is σ = 18289360051200. Its totient is φ = 4565082209472.

The previous prime is 9994055555447. The next prime is 9994055555551. The reversal of 9994055555505 is 5055555504999.

It is not a de Polignac number, because 9994055555505 - 2¹⁹ = 9994055031217 is a prime.

It is a super-2 number, since 2×9994055555505² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37668235 + ... + 37932624.

It is an arithmetic number, because the mean of its divisors is an integer number (571542501600).

Almost surely, 2^{9994055555505} is an apocalyptic number.

It is an amenable number.

9994055555505 is a deficient number, since it is larger than the sum of its proper divisors (8295304495695).

9994055555505 is a wasteful number, since it uses less digits than its factorization.

9994055555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75602133.

The product of its (nonzero) digits is 227812500, while the sum is 66.

The spelling of 9994055555505 in words is "nine trillion, nine hundred ninety-four billion, fifty-five million, five hundred fifty-five thousand, five hundred five".