78139710343 has 8 divisors (see below), whose sum is σ = 79240125888. Its totient is φ = 77040105984.

The previous prime is 78139710329. The next prime is 78139710347. The reversal of 78139710343 is 34301793187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78139710343 is a prime.

It is a super-2 number, since 2×78139710343² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78139710293 and 78139710302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78139710347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7471 + ... + 395392.

It is an arithmetic number, because the mean of its divisors is an integer number (9905015736).

Almost surely, 2^78139710343 is an apocalyptic number.

78139710343 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

78139710343 is a deficient number, since it is larger than the sum of its proper divisors (1100415545).

78139710343 is a wasteful number, since it uses less digits than its factorization.

78139710343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405593.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 78139710343 in words is "seventy-eight billion, one hundred thirty-nine million, seven hundred ten thousand, three hundred forty-three".