78384928103 has 4 divisors (see below), whose sum is σ = 78388316568. Its totient is φ = 78381539640.

The previous prime is 78384928087. The next prime is 78384928123. The reversal of 78384928103 is 30182948387.

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 78384928103 - 2⁴ = 78384928087 is a prime.

It is a super-2 number, since 2×78384928103² (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 (78384928123) 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, 1659293 + ... + 1705878.

It is an arithmetic number, because the mean of its divisors is an integer number (19597079142).

Almost surely, 2^78384928103 is an apocalyptic number.

78384928103 is a deficient number, since it is larger than the sum of its proper divisors (3388465).

78384928103 is a wasteful number, since it uses less digits than its factorization.

78384928103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388464.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 78384928103 in words is "seventy-eight billion, three hundred eighty-four million, nine hundred twenty-eight thousand, one hundred three".