694445138889 has 16 divisors (see below), whose sum is σ = 945660898560. Its totient is φ = 453097100160.

The previous prime is 694445138851. The next prime is 694445138899. The reversal of 694445138889 is 988831544496.

It is not a de Polignac number, because 694445138889 - 2¹⁶ = 694445073353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (694445138899) 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 15 ways as a sum of consecutive naturals, for example, 4930557 + ... + 5069445.

It is an arithmetic number, because the mean of its divisors is an integer number (59103806160).

Almost surely, 2^694445138889 is an apocalyptic number.

It is an amenable number.

694445138889 is a deficient number, since it is larger than the sum of its proper divisors (251215759671).

694445138889 is a wasteful number, since it uses less digits than its factorization.

694445138889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174400.

The product of its digits is 238878720, while the sum is 69.

The spelling of 694445138889 in words is "six hundred ninety-four billion, four hundred forty-five million, one hundred thirty-eight thousand, eight hundred eighty-nine".