5543612640 has 144 divisors (see below), whose sum is σ = 18950664096. Its totient is φ = 1475712000.

The previous prime is 5543612639. The next prime is 5543612689. The reversal of 5543612640 is 462163455.

5543612640 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 6 + 1 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×5543612640² = 61463282204735539200, which contains 22 as substring.

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 = 5543612595 and 5543612604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 905590 + ... + 911690.

It is an arithmetic number, because the mean of its divisors is an integer number (131601834).

Almost surely, 2^5543612640 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 5543612640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9475332048).

5543612640 is an abundant number, since it is smaller than the sum of its proper divisors (13407051456).

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

5543612640 is a wasteful number, since it uses less digits than its factorization.

5543612640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753 (or 6742 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 5543612640 is about 74455.4406339792. The cubic root of 5543612640 is about 1769.8275806385.

The spelling of 5543612640 in words is "five billion, five hundred forty-three million, six hundred twelve thousand, six hundred forty".