78823780354455 has 8 divisors (see below), whose sum is σ = 126118048567152. Its totient is φ = 42039349522368.

The previous prime is 78823780354447. The next prime is 78823780354489. The reversal of 78823780354455 is 55445308732887.

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

It is not a de Polignac number, because 78823780354455 - 2³ = 78823780354447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78823780354455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627459345134 + ... + 2627459345163.

It is an arithmetic number, because the mean of its divisors is an integer number (15764756070894).

Almost surely, 2^{78823780354455} is an apocalyptic number.

78823780354455 is a deficient number, since it is larger than the sum of its proper divisors (47294268212697).

78823780354455 is a wasteful number, since it uses less digits than its factorization.

78823780354455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5254918690305.

The product of its (nonzero) digits is 903168000, while the sum is 69.

The spelling of 78823780354455 in words is "seventy-eight trillion, eight hundred twenty-three billion, seven hundred eighty million, three hundred fifty-four thousand, four hundred fifty-five".