7718375648 has 12 divisors (see below), whose sum is σ = 15195552120. Its totient is φ = 3859187808.

The previous prime is 7718375641. The next prime is 7718375669. The reversal of 7718375648 is 8465738177.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7718375593 and 7718375602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7718375641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120599588 + ... + 120599651.

It is an arithmetic number, because the mean of its divisors is an integer number (1266296010).

Almost surely, 2^7718375648 is an apocalyptic number.

It is an amenable number.

7718375648 is a deficient number, since it is larger than the sum of its proper divisors (7477176472).

7718375648 is a wasteful number, since it uses less digits than its factorization.

7718375648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241199249 (or 241199241 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 56.

The square root of 7718375648 is about 87854.2864520565. The cubic root of 7718375648 is about 1976.2503985326.

The spelling of 7718375648 in words is "seven billion, seven hundred eighteen million, three hundred seventy-five thousand, six hundred forty-eight".