106506551661 has 8 divisors (see below), whose sum is σ = 142029199200. Its totient is φ = 70994135952.

The previous prime is 106506551617. The next prime is 106506551663. The reversal of 106506551661 is 166155605601.

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

It is not a de Polignac number, because 106506551661 - 2⁷ = 106506551533 is a prime.

It is a super-2 number, since 2×106506551661² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106506551663) 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, 2533635 + ... + 2575328.

It is an arithmetic number, because the mean of its divisors is an integer number (17753649900).

Almost surely, 2^106506551661 is an apocalyptic number.

It is an amenable number.

106506551661 is a deficient number, since it is larger than the sum of its proper divisors (35522647539).

106506551661 is an equidigital number, since it uses as much as digits as its factorization.

106506551661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115915.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 106506551661 in words is "one hundred six billion, five hundred six million, five hundred fifty-one thousand, six hundred sixty-one".