694331820001 has 4 divisors (see below), whose sum is σ = 694333746432. Its totient is φ = 694329893572.

The previous prime is 694331819989. The next prime is 694331820043. The reversal of 694331820001 is 100028133496.

694331820001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694331820001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694331820071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243145 + ... + 1203238.

It is an arithmetic number, because the mean of its divisors is an integer number (173583436608).

Almost surely, 2^694331820001 is an apocalyptic number.

It is an amenable number.

694331820001 is a deficient number, since it is larger than the sum of its proper divisors (1926431).

694331820001 is a wasteful number, since it uses less digits than its factorization.

694331820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926430.

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 694331820001 its reverse (100028133496), we get a palindrome (794359953497).

The spelling of 694331820001 in words is "six hundred ninety-four billion, three hundred thirty-one million, eight hundred twenty thousand, one".