78343087351479 has 4 divisors (see below), whose sum is σ = 104457449801976. Its totient is φ = 52228724900984.

The previous prime is 78343087351421. The next prime is 78343087351481. The reversal of 78343087351479 is 97415378034387.

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 78343087351479 - 2²¹ = 78343085254327 is a prime.

It is a super-2 number, since 2×78343087351479² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78343087351979) 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, 13057181225244 + ... + 13057181225249.

It is an arithmetic number, because the mean of its divisors is an integer number (26114362450494).

Almost surely, 2^{78343087351479} is an apocalyptic number.

78343087351479 is a deficient number, since it is larger than the sum of its proper divisors (26114362450497).

78343087351479 is a wasteful number, since it uses less digits than its factorization.

78343087351479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26114362450496.

The product of its (nonzero) digits is 426746880, while the sum is 69.

The spelling of 78343087351479 in words is "seventy-eight trillion, three hundred forty-three billion, eighty-seven million, three hundred fifty-one thousand, four hundred seventy-nine".