7549981056 has 256 divisors, whose sum is σ = 24218880000. Its totient is φ = 2306672640.

The previous prime is 7549980931. The next prime is 7549981063. The reversal of 7549981056 is 6501899457.

7549981056 is a `hidden beast` number, since 7 + 549 + 98 + 1 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 7549980993 and 7549981011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2033730 + ... + 2037438.

It is an arithmetic number, because the mean of its divisors is an integer number (94605000).

Almost surely, 2^7549981056 is an apocalyptic number.

7549981056 is a gapful number since it is divisible by the number (76) 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 7549981056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12109440000).

7549981056 is an abundant number, since it is smaller than the sum of its proper divisors (16668898944).

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

7549981056 is a wasteful number, since it uses less digits than its factorization.

7549981056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 7549981056 is about 86890.6269743751. The cubic root of 7549981056 is about 1961.7724020328.

The spelling of 7549981056 in words is "seven billion, five hundred forty-nine million, nine hundred eighty-one thousand, fifty-six".