78419943423 has 16 divisors (see below), whose sum is σ = 118082248800. Its totient is φ = 51422912640.

The previous prime is 78419943421. The next prime is 78419943431. The reversal of 78419943423 is 32434991487.

It is not a de Polignac number, because 78419943423 - 2¹ = 78419943421 is a prime.

It is a super-2 number, since 2×78419943423² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78419943423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78419943421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23805258 + ... + 23808551.

It is an arithmetic number, because the mean of its divisors is an integer number (7380140550).

Almost surely, 2^78419943423 is an apocalyptic number.

78419943423 is a deficient number, since it is larger than the sum of its proper divisors (39662305377).

78419943423 is a wasteful number, since it uses less digits than its factorization.

78419943423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47613879 (or 47613873 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 78419943423 in words is "seventy-eight billion, four hundred nineteen million, nine hundred forty-three thousand, four hundred twenty-three".