6551540480 has 72 divisors (see below), whose sum is σ = 16518994800. Its totient is φ = 2482679808.

The previous prime is 6551540477. The next prime is 6551540519. The reversal of 6551540480 is 840451556.

It is a happy number.

It is a super-2 number, since 2×6551540480² = 85845365322157260800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110375 + ... + 159014.

Almost surely, 2^6551540480 is an apocalyptic number.

It is an amenable number.

6551540480 is an abundant number, since it is smaller than the sum of its proper divisors (9967454320).

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

6551540480 is a wasteful number, since it uses less digits than its factorization.

6551540480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269429 (or 269415 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 6551540480 is about 80941.5868389050. The cubic root of 6551540480 is about 1871.1753008954.

The spelling of 6551540480 in words is "six billion, five hundred fifty-one million, five hundred forty thousand, four hundred eighty".