65430878472 has 96 divisors (see below), whose sum is σ = 182394576000. Its totient is φ = 21181080960.

The previous prime is 65430878353. The next prime is 65430878507. The reversal of 65430878472 is 27487803456.

65430878472 is a `hidden beast` number, since 65 + 4 + 30 + 87 + 8 + 472 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252679 + ... + 441257.

It is an arithmetic number, because the mean of its divisors is an integer number (1899943500).

Almost surely, 2^65430878472 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 65430878472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91197288000).

65430878472 is an abundant number, since it is smaller than the sum of its proper divisors (116963697528).

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

65430878472 is a wasteful number, since it uses less digits than its factorization.

65430878472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188731 (or 188724 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 65430878472 in words is "sixty-five billion, four hundred thirty million, eight hundred seventy-eight thousand, four hundred seventy-two".