109723771877 has 4 divisors (see below), whose sum is σ = 109728146220. Its totient is φ = 109719397536.

The previous prime is 109723771853. The next prime is 109723771931. The reversal of 109723771877 is 778177327901.

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 15048174241 + 94675597636 = 122671^2 + 307694^2 .

It is a cyclic number.

It is not a de Polignac number, because 109723771877 - 2²⁶ = 109656663013 is a prime.

It is a super-2 number, since 2×109723771877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109723773877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2149328 + ... + 2199785.

It is an arithmetic number, because the mean of its divisors is an integer number (27432036555).

Almost surely, 2^109723771877 is an apocalyptic number.

It is an amenable number.

109723771877 is a deficient number, since it is larger than the sum of its proper divisors (4374343).

109723771877 is an equidigital number, since it uses as much as digits as its factorization.

109723771877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374342.

The product of its (nonzero) digits is 7260624, while the sum is 59.

The spelling of 109723771877 in words is "one hundred nine billion, seven hundred twenty-three million, seven hundred seventy-one thousand, eight hundred seventy-seven".