7776343872 has 224 divisors, whose sum is σ = 25615635840. Its totient is φ = 2292572160.

The previous prime is 7776343859. The next prime is 7776343873. The reversal of 7776343872 is 2783436777.

7776343872 is a `hidden beast` number, since 77 + 76 + 3 + 438 + 72 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7776343873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697768 + ... + 708824.

Almost surely, 2^7776343872 is an apocalyptic number.

7776343872 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 7776343872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12807817920).

7776343872 is an abundant number, since it is smaller than the sum of its proper divisors (17839291968).

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

7776343872 is a wasteful number, since it uses less digits than its factorization.

7776343872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11126 (or 11110 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 54.

The square root of 7776343872 is about 88183.5805124741. The cubic root of 7776343872 is about 1981.1855526184.

The spelling of 7776343872 in words is "seven billion, seven hundred seventy-six million, three hundred forty-three thousand, eight hundred seventy-two".