5640491250 has 120 divisors (see below), whose sum is σ = 15936148800. Its totient is φ = 1438668000.

The previous prime is 5640491249. The next prime is 5640491293. The reversal of 5640491250 is 521940465.

5640491250 is a `hidden beast` number, since 5 + 640 + 4 + 9 + 1 + 2 + 5 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 247851 + ... + 269649.

It is an arithmetic number, because the mean of its divisors is an integer number (132801240).

Almost surely, 2^5640491250 is an apocalyptic number.

5640491250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5640491250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7968074400).

5640491250 is an abundant number, since it is smaller than the sum of its proper divisors (10295657550).

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

5640491250 is a wasteful number, since it uses less digits than its factorization.

5640491250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21850 (or 21832 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 5640491250 is about 75103.2039929057. The cubic root of 5640491250 is about 1780.0777698210.

The spelling of 5640491250 in words is "five billion, six hundred forty million, four hundred ninety-one thousand, two hundred fifty".