694439792641 has 16 divisors (see below), whose sum is σ = 810698803200. Its totient is φ = 582501860928.

The previous prime is 694439792633. The next prime is 694439792647. The reversal of 694439792641 is 146297934496.

It is a cyclic number.

It is not a de Polignac number, because 694439792641 - 2³ = 694439792633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694439792647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2261601 + ... + 2550238.

It is an arithmetic number, because the mean of its divisors is an integer number (50668675200).

Almost surely, 2^694439792641 is an apocalyptic number.

It is an amenable number.

694439792641 is a deficient number, since it is larger than the sum of its proper divisors (116259010559).

694439792641 is a wasteful number, since it uses less digits than its factorization.

694439792641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812288.

The product of its digits is 70543872, while the sum is 64.

The spelling of 694439792641 in words is "six hundred ninety-four billion, four hundred thirty-nine million, seven hundred ninety-two thousand, six hundred forty-one".