78713477409 has 8 divisors (see below), whose sum is σ = 119944346560. Its totient is φ = 44979129936.

The previous prime is 78713477399. The next prime is 78713477411. The reversal of 78713477409 is 90477431787.

It is a happy number.

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

It is not a de Polignac number, because 78713477409 - 2⁷ = 78713477281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78713477449) 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, 1874130394 + ... + 1874130435.

It is an arithmetic number, because the mean of its divisors is an integer number (14993043320).

Almost surely, 2^78713477409 is an apocalyptic number.

It is an amenable number.

78713477409 is a deficient number, since it is larger than the sum of its proper divisors (41230869151).

78713477409 is a wasteful number, since it uses less digits than its factorization.

78713477409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748260839.

The product of its (nonzero) digits is 8297856, while the sum is 57.

The spelling of 78713477409 in words is "seventy-eight billion, seven hundred thirteen million, four hundred seventy-seven thousand, four hundred nine".