6552165653550 has 72 divisors (see below), whose sum is σ = 19203801893640. Its totient is φ = 1588403793600.

The previous prime is 6552165653471. The next prime is 6552165653567. The reversal of 6552165653550 is 553565612556.

6552165653550 is a `hidden beast` number, since 6 + 5 + 5 + 2 + 1 + 6 + 56 + 535 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 661829965 + ... + 661839864.

It is an arithmetic number, because the mean of its divisors is an integer number (266719470745).

Almost surely, 2^{6552165653550} is an apocalyptic number.

6552165653550 is an abundant number, since it is smaller than the sum of its proper divisors (12651636240090).

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

6552165653550 is a wasteful number, since it uses less digits than its factorization.

6552165653550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323669858 (or 1323669850 counting only the distinct ones).

The product of its (nonzero) digits is 20250000, while the sum is 54.

The spelling of 6552165653550 in words is "six trillion, five hundred fifty-two billion, one hundred sixty-five million, six hundred fifty-three thousand, five hundred fifty".