78220893355 has 8 divisors (see below), whose sum is σ = 102398260464. Its totient is φ = 56887922400.

The previous prime is 78220893341. The next prime is 78220893367. The reversal of 78220893355 is 55339802287.

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

It is not a de Polignac number, because 78220893355 - 2⁷ = 78220893227 is a prime.

It is a super-2 number, since 2×78220893355² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 6.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 711098976 + ... + 711099085.

It is an arithmetic number, because the mean of its divisors is an integer number (12799782558).

Almost surely, 2^78220893355 is an apocalyptic number.

78220893355 is a deficient number, since it is larger than the sum of its proper divisors (24177367109).

78220893355 is a wasteful number, since it uses less digits than its factorization.

78220893355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422198077.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 78220893355 in words is "seventy-eight billion, two hundred twenty million, eight hundred ninety-three thousand, three hundred fifty-five".