816418675701 has 6 divisors (see below), whose sum is σ = 1179271420470. Its totient is φ = 544279117128.

The previous prime is 816418675691. The next prime is 816418675727. The reversal of 816418675701 is 107576814618.

816418675701 is a `hidden beast` number, since 8 + 1 + 6 + 4 + 1 + 8 + 67 + 570 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 679303991601 + 137114684100 = 824199^2 + 370290^2 .

It is not a de Polignac number, because 816418675701 - 2¹⁴ = 816418659317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816418675301) 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 5 ways as a sum of consecutive naturals, for example, 45356593086 + ... + 45356593103.

It is an arithmetic number, because the mean of its divisors is an integer number (196545236745).

Almost surely, 2^816418675701 is an apocalyptic number.

It is an amenable number.

816418675701 is a deficient number, since it is larger than the sum of its proper divisors (362852744769).

816418675701 is a wasteful number, since it uses less digits than its factorization.

816418675701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90713186195 (or 90713186192 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 816418675701 in words is "eight hundred sixteen billion, four hundred eighteen million, six hundred seventy-five thousand, seven hundred one".