7681742117 has 16 divisors (see below), whose sum is σ = 8819956992. Its totient is φ = 6553785600.

The previous prime is 7681742113. The next prime is 7681742149. The reversal of 7681742117 is 7112471867.

It is a cyclic number.

It is not a de Polignac number, because 7681742117 - 2² = 7681742113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681742113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009992 + ... + 3012542.

It is an arithmetic number, because the mean of its divisors is an integer number (551247312).

Almost surely, 2^7681742117 is an apocalyptic number.

It is an amenable number.

7681742117 is a deficient number, since it is larger than the sum of its proper divisors (1138214875).

7681742117 is a wasteful number, since it uses less digits than its factorization.

7681742117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388.

The product of its digits is 131712, while the sum is 44.

The square root of 7681742117 is about 87645.5481870015. The cubic root of 7681742117 is about 1973.1188297823.

The spelling of 7681742117 in words is "seven billion, six hundred eighty-one million, seven hundred forty-two thousand, one hundred seventeen".