78543200477 has 8 divisors (see below), whose sum is σ = 89797011456. Its totient is φ = 67297727952.

The previous prime is 78543200443. The next prime is 78543200479. The reversal of 78543200477 is 77400234587.

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

It is not a de Polignac number, because 78543200477 - 2⁶ = 78543200413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78543200479) 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, 2064413 + ... + 2102114.

It is an arithmetic number, because the mean of its divisors is an integer number (11224626432).

Almost surely, 2^78543200477 is an apocalyptic number.

It is an amenable number.

78543200477 is a deficient number, since it is larger than the sum of its proper divisors (11253810979).

78543200477 is a wasteful number, since it uses less digits than its factorization.

78543200477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4169227.

The product of its (nonzero) digits is 1317120, while the sum is 47.

The spelling of 78543200477 in words is "seventy-eight billion, five hundred forty-three million, two hundred thousand, four hundred seventy-seven".