811683438107 has 16 divisors (see below), whose sum is σ = 878905036800. Its totient is φ = 747068938560.

The previous prime is 811683438101. The next prime is 811683438109. The reversal of 811683438107 is 701834386118.

It is a cyclic number.

It is not a de Polignac number, because 811683438107 - 2⁴ = 811683438091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811683438101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993643 + ... + 2366004.

It is an arithmetic number, because the mean of its divisors is an integer number (54931564800).

Almost surely, 2^811683438107 is an apocalyptic number.

811683438107 is a deficient number, since it is larger than the sum of its proper divisors (67221598693).

811683438107 is a wasteful number, since it uses less digits than its factorization.

811683438107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359946.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 811683438107 in words is "eight hundred eleven billion, six hundred eighty-three million, four hundred thirty-eight thousand, one hundred seven".