5621861850 has 96 divisors (see below), whose sum is σ = 15303734784. Its totient is φ = 1354449600.

The previous prime is 5621861837. The next prime is 5621861879. The reversal of 5621861850 is 581681265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258499 + ... + 279401.

It is an arithmetic number, because the mean of its divisors is an integer number (159413904).

Almost surely, 2^5621861850 is an apocalyptic number.

5621861850 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 5621861850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7651867392).

5621861850 is an abundant number, since it is smaller than the sum of its proper divisors (9681872934).

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

5621861850 is a wasteful number, since it uses less digits than its factorization.

5621861850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21092 (or 21087 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 5621861850 is about 74979.0760812642. The cubic root of 5621861850 is about 1778.1158628787.

The spelling of 5621861850 in words is "five billion, six hundred twenty-one million, eight hundred sixty-one thousand, eight hundred fifty".