5543020666 has 32 divisors (see below), whose sum is σ = 8580914496. Its totient is φ = 2683824000.

The previous prime is 5543020657. The next prime is 5543020687. The reversal of 5543020666 is 6660203455.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12023676 + ... + 12024136.

It is an arithmetic number, because the mean of its divisors is an integer number (268153578).

Almost surely, 2^5543020666 is an apocalyptic number.

5543020666 is a deficient number, since it is larger than the sum of its proper divisors (3037893830).

5543020666 is a wasteful number, since it uses less digits than its factorization.

5543020666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 5543020666 is about 74451.4651702705. The cubic root of 5543020666 is about 1769.7645814552.

The spelling of 5543020666 in words is "five billion, five hundred forty-three million, twenty thousand, six hundred sixty-six".