811961442601 has 8 divisors (see below), whose sum is σ = 817239503808. Its totient is φ = 806692086000.

The previous prime is 811961442577. The next prime is 811961442613. The reversal of 811961442601 is 106244169118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 811961442601 - 2¹⁷ = 811961311529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811961442641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1988935 + ... + 2362156.

It is an arithmetic number, because the mean of its divisors is an integer number (102154937976).

Almost surely, 2^811961442601 is an apocalyptic number.

It is an amenable number.

811961442601 is a deficient number, since it is larger than the sum of its proper divisors (5278061207).

811961442601 is a wasteful number, since it uses less digits than its factorization.

811961442601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352303.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 811961442601 in words is "eight hundred eleven billion, nine hundred sixty-one million, four hundred forty-two thousand, six hundred one".