550022661540 has 288 divisors, whose sum is σ = 1860533176320. Its totient is φ = 130380192000.

The previous prime is 550022661533. The next prime is 550022661583. The reversal of 550022661540 is 45166220055.

550022661540 is a `hidden beast` number, since 5 + 50 + 0 + 2 + 2 + 6 + 61 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 550022661495 and 550022661504.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 135772515 + ... + 135776565.

It is an arithmetic number, because the mean of its divisors is an integer number (6460184640).

Almost surely, 2^550022661540 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 550022661540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930266588160).

550022661540 is an abundant number, since it is smaller than the sum of its proper divisors (1310510514780).

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

550022661540 is a wasteful number, since it uses less digits than its factorization.

550022661540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5583 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 550022661540 its reverse (45166220055), we get a palindrome (595188881595).

The spelling of 550022661540 in words is "five hundred fifty billion, twenty-two million, six hundred sixty-one thousand, five hundred forty".