78473714369 has 4 divisors (see below), whose sum is σ = 79250681940. Its totient is φ = 77696746800.

The previous prime is 78473714357. The next prime is 78473714377. The reversal of 78473714369 is 96341737487.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76224583744 + 2249130625 = 276088^2 + 47425^2 .

It is a cyclic number.

It is not a de Polignac number, because 78473714369 - 2²⁰ = 78472665793 is a prime.

It is a super-2 number, since 2×78473714369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78473714269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388483634 + ... + 388483835.

It is an arithmetic number, because the mean of its divisors is an integer number (19812670485).

Almost surely, 2^78473714369 is an apocalyptic number.

It is an amenable number.

78473714369 is a deficient number, since it is larger than the sum of its proper divisors (776967571).

78473714369 is a wasteful number, since it uses less digits than its factorization.

78473714369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776967570.

The product of its digits is 21337344, while the sum is 59.

The spelling of 78473714369 in words is "seventy-eight billion, four hundred seventy-three million, seven hundred fourteen thousand, three hundred sixty-nine".