8221307680578 has 64 divisors (see below), whose sum is σ = 16838234380800. Its totient is φ = 2675321320320.

The previous prime is 8221307680571. The next prime is 8221307680583. The reversal of 8221307680578 is 8750867031228.

It is not an unprimeable number, because it can be changed into a prime (8221307680571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71700033 + ... + 71814603.

It is an arithmetic number, because the mean of its divisors is an integer number (263097412200).

Almost surely, 2^{8221307680578} is an apocalyptic number.

8221307680578 is an abundant number, since it is smaller than the sum of its proper divisors (8616926700222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8221307680578 is a wasteful number, since it uses less digits than its factorization.

8221307680578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116367.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 8221307680578 in words is "eight trillion, two hundred twenty-one billion, three hundred seven million, six hundred eighty thousand, five hundred seventy-eight".