7745066672 has 80 divisors (see below), whose sum is σ = 18071581440. Its totient is φ = 3141275904.

The previous prime is 7745066611. The next prime is 7745066687. The reversal of 7745066672 is 2766605477.

It is a self number, because there is not a number n which added to its sum of digits gives 7745066672.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3461138 + ... + 3463374.

It is an arithmetic number, because the mean of its divisors is an integer number (225894768).

Almost surely, 2^7745066672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7745066672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9035790720).

7745066672 is an abundant number, since it is smaller than the sum of its proper divisors (10326514768).

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

7745066672 is a wasteful number, since it uses less digits than its factorization.

7745066672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 50.

The square root of 7745066672 is about 88006.0604276774. The cubic root of 7745066672 is about 1978.5258108182.

The spelling of 7745066672 in words is "seven billion, seven hundred forty-five million, sixty-six thousand, six hundred seventy-two".