7789855472 has 20 divisors (see below), whose sum is σ = 17248965936. Its totient is φ = 3338509440.

The previous prime is 7789855471. The next prime is 7789855499. The reversal of 7789855472 is 2745589877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7789855471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34776029 + ... + 34776252.

Almost surely, 2^7789855472 is an apocalyptic number.

It is an amenable number.

7789855472 is an abundant number, since it is smaller than the sum of its proper divisors (9459110464).

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

7789855472 is a wasteful number, since it uses less digits than its factorization.

7789855472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69552296 (or 69552290 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 62.

The square root of 7789855472 is about 88260.1578969809. The cubic root of 7789855472 is about 1982.3323425137.

The spelling of 7789855472 in words is "seven billion, seven hundred eighty-nine million, eight hundred fifty-five thousand, four hundred seventy-two".