106778975851 has 4 divisors (see below), whose sum is σ = 106830736992. Its totient is φ = 106727214712.

The previous prime is 106778975839. The next prime is 106778975873. The reversal of 106778975851 is 158579877601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158579877601 = 23 ⋅6894777287.

It is a cyclic number.

It is not a de Polignac number, because 106778975851 - 2⁹ = 106778975339 is a prime.

It is a super-2 number, since 2×106778975851² (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 (106778975801) 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, 25877476 + ... + 25881601.

It is an arithmetic number, because the mean of its divisors is an integer number (26707684248).

Almost surely, 2^106778975851 is an apocalyptic number.

106778975851 is a deficient number, since it is larger than the sum of its proper divisors (51761141).

106778975851 is an equidigital number, since it uses as much as digits as its factorization.

106778975851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51761140.

The product of its (nonzero) digits is 29635200, while the sum is 64.

The spelling of 106778975851 in words is "one hundred six billion, seven hundred seventy-eight million, nine hundred seventy-five thousand, eight hundred fifty-one".