5681139840 has 768 divisors, whose sum is σ = 22493203200. Its totient is φ = 1313832960.

The previous prime is 5681139839. The next prime is 5681139923. The reversal of 5681139840 is 489311865.

5681139840 is a `hidden beast` number, since 568 + 1 + 1 + 3 + 9 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 95 ways as a sum of consecutive naturals, for example, 93133410 + ... + 93133470.

It is an arithmetic number, because the mean of its divisors is an integer number (29288025).

Almost surely, 2^5681139840 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 5681139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11246601600).

5681139840 is an abundant number, since it is smaller than the sum of its proper divisors (16812063360).

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

5681139840 is a wasteful number, since it uses less digits than its factorization.

5681139840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 5681139840 is about 75373.3363995518. The cubic root of 5681139840 is about 1784.3436232727.

The spelling of 5681139840 in words is "five billion, six hundred eighty-one million, one hundred thirty-nine thousand, eight hundred forty".