100661561113 has 8 divisors (see below), whose sum is σ = 101313616320. Its totient is φ = 100010093040.

The previous prime is 100661561111. The next prime is 100661561131. The reversal of 100661561113 is 311165166001.

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 100661561113 - 2¹ = 100661561111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100661561111) 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, 199858 + ... + 491188.

It is an arithmetic number, because the mean of its divisors is an integer number (12664202040).

Almost surely, 2^100661561113 is an apocalyptic number.

It is an amenable number.

100661561113 is a deficient number, since it is larger than the sum of its proper divisors (652055207).

100661561113 is a wasteful number, since it uses less digits than its factorization.

100661561113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293567.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 100661561113 in words is "one hundred billion, six hundred sixty-one million, five hundred sixty-one thousand, one hundred thirteen".