106128608779 has 4 divisors (see below), whose sum is σ = 109552112320. Its totient is φ = 102705105240.

The previous prime is 106128608777. The next prime is 106128608821. The reversal of 106128608779 is 977806821601.

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

It is a cyclic number.

It is not a de Polignac number, because 106128608779 - 2¹ = 106128608777 is a prime.

It is a super-2 number, since 2×106128608779² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106128608777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711751724 + ... + 1711751785.

It is an arithmetic number, because the mean of its divisors is an integer number (27388028080).

Almost surely, 2^106128608779 is an apocalyptic number.

106128608779 is a deficient number, since it is larger than the sum of its proper divisors (3423503541).

106128608779 is an equidigital number, since it uses as much as digits as its factorization.

106128608779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423503540.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 106128608779 in words is "one hundred six billion, one hundred twenty-eight million, six hundred eight thousand, seven hundred seventy-nine".