578327308920 has 640 divisors, whose sum is σ = 2047891507200. Its totient is φ = 146226124800.

The previous prime is 578327308903. The next prime is 578327308921. The reversal of 578327308920 is 29803723875.

578327308920 is a `hidden beast` number, since 5 + 7 + 8 + 327 + 308 + 9 + 2 + 0 = 666.

It is a super-2 number, since 2×578327308920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578327308921) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1317374061 + ... + 1317374499.

It is an arithmetic number, because the mean of its divisors is an integer number (3199830480).

Almost surely, 2^578327308920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 578327308920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023945753600).

578327308920 is an abundant number, since it is smaller than the sum of its proper divisors (1469564198280).

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

578327308920 is a wasteful number, since it uses less digits than its factorization.

578327308920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 578327308920 in words is "five hundred seventy-eight billion, three hundred twenty-seven million, three hundred eight thousand, nine hundred twenty".