101661640101106 has 4 divisors (see below), whose sum is σ = 152492460151662. Its totient is φ = 50830820050552.

The previous prime is 101661640101041. The next prime is 101661640101121. The reversal of 101661640101106 is 601101046166101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77571792025225 + 24089848075881 = 8807485^2 + 4908141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25415410025275 + ... + 25415410025278.

Almost surely, 2^{101661640101106} is an apocalyptic number.

101661640101106 is a deficient number, since it is larger than the sum of its proper divisors (50830820050556).

101661640101106 is an equidigital number, since it uses as much as digits as its factorization.

101661640101106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50830820050555.

The product of its (nonzero) digits is 5184, while the sum is 34.

Adding to 101661640101106 its reverse (601101046166101), we get a palindrome (702762686267207).

The spelling of 101661640101106 in words is "one hundred one trillion, six hundred sixty-one billion, six hundred forty million, one hundred one thousand, one hundred six".