106616511605 has 4 divisors (see below), whose sum is σ = 127939813932. Its totient is φ = 85293209280.

The previous prime is 106616511587. The next prime is 106616511611. The reversal of 106616511605 is 506115616601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22737925681 + 83878585924 = 150791^2 + 289618^2 .

It is not a de Polignac number, because 106616511605 - 2⁶ = 106616511541 is a prime.

It is a super-3 number, since 3×106616511605³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10661651156 + ... + 10661651165.

It is an arithmetic number, because the mean of its divisors is an integer number (31984953483).

Almost surely, 2^106616511605 is an apocalyptic number.

It is an amenable number.

106616511605 is a deficient number, since it is larger than the sum of its proper divisors (21323302327).

106616511605 is an equidigital number, since it uses as much as digits as its factorization.

106616511605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21323302326.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 106616511605 in words is "one hundred six billion, six hundred sixteen million, five hundred eleven thousand, six hundred five".