103878643123 has 4 divisors (see below), whose sum is σ = 109989151560. Its totient is φ = 97768134688.

The previous prime is 103878643109. The next prime is 103878643177. The reversal of 103878643123 is 321346878301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321346878301 = 409 ⋅785689189.

It is a cyclic number.

It is not a de Polignac number, because 103878643123 - 2¹³ = 103878634931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103878644123) 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, 3055254193 + ... + 3055254226.

It is an arithmetic number, because the mean of its divisors is an integer number (27497287890).

Almost surely, 2^103878643123 is an apocalyptic number.

103878643123 is a deficient number, since it is larger than the sum of its proper divisors (6110508437).

103878643123 is an equidigital number, since it uses as much as digits as its factorization.

103878643123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110508436.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 103878643123 in words is "one hundred three billion, eight hundred seventy-eight million, six hundred forty-three thousand, one hundred twenty-three".