100661660061 has 8 divisors (see below), whose sum is σ = 134396189760. Its totient is φ = 67017451872.

The previous prime is 100661660053. The next prime is 100661660087. The reversal of 100661660061 is 160066166001.

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

It is not a de Polignac number, because 100661660061 - 2³ = 100661660053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100661660051) 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 7 ways as a sum of consecutive naturals, for example, 22577776 + ... + 22582233.

It is an arithmetic number, because the mean of its divisors is an integer number (16799523720).

Almost surely, 2^100661660061 is an apocalyptic number.

It is an amenable number.

100661660061 is a deficient number, since it is larger than the sum of its proper divisors (33734529699).

100661660061 is an equidigital number, since it uses as much as digits as its factorization.

100661660061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45160755.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 100661660061 in words is "one hundred billion, six hundred sixty-one million, six hundred sixty thousand, sixty-one".