6550656066554 has 4 divisors (see below), whose sum is σ = 9825984099834. Its totient is φ = 3275328033276.

The previous prime is 6550656066541. The next prime is 6550656066607. The reversal of 6550656066554 is 4556606560556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6497630412025 + 53025654529 = 2549045^2 + 230273^2 .

It is a super-3 number, since 3×6550656066554³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6550656066493 and 6550656066502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1637664016637 + ... + 1637664016640.

Almost surely, 2^{6550656066554} is an apocalyptic number.

6550656066554 is a deficient number, since it is larger than the sum of its proper divisors (3275328033280).

6550656066554 is a wasteful number, since it uses less digits than its factorization.

6550656066554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275328033279.

The product of its (nonzero) digits is 97200000, while the sum is 59.

The spelling of 6550656066554 in words is "six trillion, five hundred fifty billion, six hundred fifty-six million, sixty-six thousand, five hundred fifty-four".