7551516672 has 408 divisors, whose sum is σ = 26172257280. Its totient is φ = 2052587520.

The previous prime is 7551516631. The next prime is 7551516673. The reversal of 7551516672 is 2766151557.

7551516672 is a `hidden beast` number, since 7 + 5 + 515 + 1 + 66 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (7551516673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127991779 + ... + 127991837.

Almost surely, 2^7551516672 is an apocalyptic number.

7551516672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7551516672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13086128640).

7551516672 is an abundant number, since it is smaller than the sum of its proper divisors (18620740608).

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

7551516672 is an equidigital number, since it uses as much as digits as its factorization.

7551516672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 102 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The square root of 7551516672 is about 86899.4630133006. The cubic root of 7551516672 is about 1961.9053968419.

The spelling of 7551516672 in words is "seven billion, five hundred fifty-one million, five hundred sixteen thousand, six hundred seventy-two".