801611031365561 has 8 divisors (see below), whose sum is σ = 827490507656448. Its totient is φ = 775732871070000.

The previous prime is 801611031365539. The next prime is 801611031365567. The reversal of 801611031365561 is 165563130116108.

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 801611031365561 - 2⁴⁶ = 731242287187897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801611031365567) 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, 327760835 + ... + 330197496.

It is an arithmetic number, because the mean of its divisors is an integer number (103436313457056).

Almost surely, 2^{801611031365561} is an apocalyptic number.

It is an amenable number.

801611031365561 is a deficient number, since it is larger than the sum of its proper divisors (25879476290887).

801611031365561 is a wasteful number, since it uses less digits than its factorization.

801611031365561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657997663.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 801611031365561 in words is "eight hundred one trillion, six hundred eleven billion, thirty-one million, three hundred sixty-five thousand, five hundred sixty-one".