5681660100 has 144 divisors (see below), whose sum is σ = 18163087488. Its totient is φ = 1363957760.

The previous prime is 5681660093. The next prime is 5681660113. The reversal of 5681660100 is 10661865.

It is a super-2 number, since 2×5681660100² = 64562522983864020000, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 93082 + ... + 141518.

It is an arithmetic number, because the mean of its divisors is an integer number (126132552).

Almost surely, 2^5681660100 is an apocalyptic number.

5681660100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5681660100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9081543744).

5681660100 is an abundant number, since it is smaller than the sum of its proper divisors (12481427388).

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

5681660100 is a wasteful number, since it uses less digits than its factorization.

5681660100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48494 (or 48487 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 5681660100 is about 75376.7875409930. The cubic root of 5681660100 is about 1784.3980897063.

The spelling of 5681660100 in words is "five billion, six hundred eighty-one million, six hundred sixty thousand, one hundred".