82578330385 has 8 divisors (see below), whose sum is σ = 104309470080. Its totient is φ = 62585681904.

The previous prime is 82578330383. The next prime is 82578330409. The reversal of 82578330385 is 58303387528.

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

It is a cyclic number.

It is not a de Polignac number, because 82578330385 - 2¹ = 82578330383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82578330383) 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, 434622697 + ... + 434622886.

It is an arithmetic number, because the mean of its divisors is an integer number (13038683760).

Almost surely, 2^82578330385 is an apocalyptic number.

It is an amenable number.

82578330385 is a deficient number, since it is larger than the sum of its proper divisors (21731139695).

82578330385 is a wasteful number, since it uses less digits than its factorization.

82578330385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869245607.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 82578330385 in words is "eighty-two billion, five hundred seventy-eight million, three hundred thirty thousand, three hundred eighty-five".