5495678640 has 240 divisors, whose sum is σ = 19539954720. Its totient is φ = 1381847040.

The previous prime is 5495678633. The next prime is 5495678641. The reversal of 5495678640 is 468765945.

5495678640 is a `hidden beast` number, since 549 + 56 + 7 + 8 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (5495678641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 894780 + ... + 900900.

It is an arithmetic number, because the mean of its divisors is an integer number (81416478).

Almost surely, 2^5495678640 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 5495678640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9769977360).

5495678640 is an abundant number, since it is smaller than the sum of its proper divisors (14044276080).

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

5495678640 is a wasteful number, since it uses less digits than its factorization.

5495678640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212 (or 6203 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 5495678640 is about 74132.8445427531. The cubic root of 5495678640 is about 1764.7117463491.

The spelling of 5495678640 in words is "five billion, four hundred ninety-five million, six hundred seventy-eight thousand, six hundred forty".