100661561114 has 16 divisors (see below), whose sum is σ = 154031547240. Its totient is φ = 49320061440.

The previous prime is 100661561111. The next prime is 100661561131. The reversal of 100661561114 is 411165166001.

It can be written as a sum of positive squares in 4 ways, for example, as 84283960489 + 16377600625 = 290317^2 + 127975^2 .

It is a Curzon 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, 501167 + ... + 672674.

Almost surely, 2^100661561114 is an apocalyptic number.

100661561114 is a deficient number, since it is larger than the sum of its proper divisors (53369986126).

100661561114 is a wasteful number, since it uses less digits than its factorization.

100661561114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174705.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 100661561114 in words is "one hundred billion, six hundred sixty-one million, five hundred sixty-one thousand, one hundred fourteen".