616404209894 has 16 divisors (see below), whose sum is σ = 1015430979600. Its totient is φ = 278303302560.

The previous prime is 616404209893. The next prime is 616404209923. The reversal of 616404209894 is 498902404616.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616404209893) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 94018109 + ... + 94024664.

It is an arithmetic number, because the mean of its divisors is an integer number (63464436225).

Almost surely, 2^616404209894 is an apocalyptic number.

616404209894 is a deficient number, since it is larger than the sum of its proper divisors (399026769706).

616404209894 is a wasteful number, since it uses less digits than its factorization.

616404209894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188042935.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 616404209894 in words is "six hundred sixteen billion, four hundred four million, two hundred nine thousand, eight hundred ninety-four".