864578578074 has 32 divisors (see below), whose sum is σ = 1745801303040. Its totient is φ = 285432014400.

The previous prime is 864578578009. The next prime is 864578578141. The reversal of 864578578074 is 470875875468.

It is a super-2 number, since 2×864578578074² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384797 + ... + 1909664.

It is an arithmetic number, because the mean of its divisors is an integer number (54556290720).

Almost surely, 2^864578578074 is an apocalyptic number.

864578578074 is an abundant number, since it is smaller than the sum of its proper divisors (881222724966).

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

864578578074 is a wasteful number, since it uses less digits than its factorization.

864578578074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294886.

The product of its (nonzero) digits is 421478400, while the sum is 69.

The spelling of 864578578074 in words is "eight hundred sixty-four billion, five hundred seventy-eight million, five hundred seventy-eight thousand, seventy-four".