78465307341643 has 4 divisors (see below), whose sum is σ = 79159690592568. Its totient is φ = 77770924090720.

The previous prime is 78465307341623. The next prime is 78465307341649. The reversal of 78465307341643 is 34614370356487.

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 78465307341643 - 2¹⁷ = 78465307210571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78465307341649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347191625293 + ... + 347191625518.

It is an arithmetic number, because the mean of its divisors is an integer number (19789922648142).

Almost surely, 2^{78465307341643} is an apocalyptic number.

78465307341643 is a deficient number, since it is larger than the sum of its proper divisors (694383250925).

78465307341643 is a wasteful number, since it uses less digits than its factorization.

78465307341643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694383250924.

The product of its (nonzero) digits is 121927680, while the sum is 61.

The spelling of 78465307341643 in words is "seventy-eight trillion, four hundred sixty-five billion, three hundred seven million, three hundred forty-one thousand, six hundred forty-three".