109873877389 has 4 divisors (see below), whose sum is σ = 109875931900. Its totient is φ = 109871822880.

The previous prime is 109873877387. The next prime is 109873877401. The reversal of 109873877389 is 983778378901.

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 26963282025 + 82910595364 = 164205^2 + 287942^2 .

It is a cyclic number.

It is not a de Polignac number, because 109873877389 - 2¹ = 109873877387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109873877381) 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, 944832 + ... + 1054729.

It is an arithmetic number, because the mean of its divisors is an integer number (27468982975).

Almost surely, 2^109873877389 is an apocalyptic number.

It is an amenable number.

109873877389 is a deficient number, since it is larger than the sum of its proper divisors (2054511).

109873877389 is an equidigital number, since it uses as much as digits as its factorization.

109873877389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054510.

The product of its (nonzero) digits is 128024064, while the sum is 70.

The spelling of 109873877389 in words is "one hundred nine billion, eight hundred seventy-three million, eight hundred seventy-seven thousand, three hundred eighty-nine".