6551551216 has 40 divisors (see below), whose sum is σ = 14681810304. Its totient is φ = 2773974720.

The previous prime is 6551551213. The next prime is 6551551231. The reversal of 6551551216 is 6121551556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551551213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343090 + ... + 361681.

Almost surely, 2^6551551216 is an apocalyptic number.

It is an amenable number.

6551551216 is an abundant number, since it is smaller than the sum of its proper divisors (8130259088).

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

6551551216 is a wasteful number, since it uses less digits than its factorization.

6551551216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704869 (or 704863 counting only the distinct ones).

The product of its digits is 45000, while the sum is 37.

The square root of 6551551216 is about 80941.6531583090. The cubic root of 6551551216 is about 1871.1763229922.

The spelling of 6551551216 in words is "six billion, five hundred fifty-one million, five hundred fifty-one thousand, two hundred sixteen".