554221783440 has 1120 divisors, whose sum is σ = 2232309623040. Its totient is φ = 126817726464.

The previous prime is 554221783411. The next prime is 554221783441. The reversal of 554221783440 is 44387122455.

554221783440 is a `hidden beast` number, since 5 + 542 + 2 + 1 + 78 + 34 + 4 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (554221783441) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 645193731 + ... + 645194589.

It is an arithmetic number, because the mean of its divisors is an integer number (1993133592).

Almost surely, 2^554221783440 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 554221783440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116154811520).

554221783440 is an abundant number, since it is smaller than the sum of its proper divisors (1678087839600).

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

554221783440 is a wasteful number, since it uses less digits than its factorization.

554221783440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 554221783440 in words is "five hundred fifty-four billion, two hundred twenty-one million, seven hundred eighty-three thousand, four hundred forty".