7691994507 has 4 divisors (see below), whose sum is σ = 10255992680. Its totient is φ = 5127996336.

The previous prime is 7691994503. The next prime is 7691994509. The reversal of 7691994507 is 7054991967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7054991967 = 3 ⋅2351663989.

It is not a de Polignac number, because 7691994507 - 2² = 7691994503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7691994503) 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 3 ways as a sum of consecutive naturals, for example, 1281999082 + ... + 1281999087.

It is an arithmetic number, because the mean of its divisors is an integer number (2563998170).

Almost surely, 2^7691994507 is an apocalyptic number.

7691994507 is a deficient number, since it is larger than the sum of its proper divisors (2563998173).

7691994507 is a wasteful number, since it uses less digits than its factorization.

7691994507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563998172.

The product of its (nonzero) digits is 4286520, while the sum is 57.

The square root of 7691994507 is about 87704.0164815728. The cubic root of 7691994507 is about 1973.9962432012.

The spelling of 7691994507 in words is "seven billion, six hundred ninety-one million, nine hundred ninety-four thousand, five hundred seven".