7668117745 has 16 divisors (see below), whose sum is σ = 9255398400. Its totient is φ = 6098773824.

The previous prime is 7668117731. The next prime is 7668117761. The reversal of 7668117745 is 5477118667.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7668117745 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7668117692 and 7668117701.

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, 1722112 + ... + 1726558.

It is an arithmetic number, because the mean of its divisors is an integer number (578462400).

Almost surely, 2^7668117745 is an apocalyptic number.

It is an amenable number.

7668117745 is a deficient number, since it is larger than the sum of its proper divisors (1587280655).

7668117745 is a wasteful number, since it uses less digits than its factorization.

7668117745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384.

The product of its digits is 1975680, while the sum is 52.

The square root of 7668117745 is about 87567.7894262496. The cubic root of 7668117745 is about 1971.9516286803.

The spelling of 7668117745 in words is "seven billion, six hundred sixty-eight million, one hundred seventeen thousand, seven hundred forty-five".