7719343872 has 144 divisors (see below), whose sum is σ = 20864497920. Its totient is φ = 2533441536.

The previous prime is 7719343871. The next prime is 7719343903. The reversal of 7719343872 is 2783439177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7719343871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17827368 + ... + 17827800.

Almost surely, 2^7719343872 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 7719343872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10432248960).

7719343872 is an abundant number, since it is smaller than the sum of its proper divisors (13145154048).

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

7719343872 is a wasteful number, since it uses less digits than its factorization.

7719343872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 744 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 51.

The square root of 7719343872 is about 87859.7966762956. The cubic root of 7719343872 is about 1976.3330313363. Note that the first 3 decimals are identical.

The spelling of 7719343872 in words is "seven billion, seven hundred nineteen million, three hundred forty-three thousand, eight hundred seventy-two".