5555721461850 has 1440 divisors, whose sum is σ = 19137950092800. Its totient is φ = 1189839974400.

The previous prime is 5555721461791. The next prime is 5555721461863. The reversal of 5555721461850 is 581641275555.

5555721461850 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 7 + 2 + 14 + 618 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 719 ways as a sum of consecutive naturals, for example, 39969219081 + ... + 39969219219.

It is an arithmetic number, because the mean of its divisors is an integer number (13290243120).

Almost surely, 2^{5555721461850} is an apocalyptic number.

5555721461850 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 5555721461850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9568975046400).

5555721461850 is an abundant number, since it is smaller than the sum of its proper divisors (13582228630950).

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

5555721461850 is a wasteful number, since it uses less digits than its factorization.

5555721461850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 8400000, while the sum is 54.

The spelling of 5555721461850 in words is "five trillion, five hundred fifty-five billion, seven hundred twenty-one million, four hundred sixty-one thousand, eight hundred fifty".