7681383751 has 4 divisors (see below), whose sum is σ = 8133229872. Its totient is φ = 7229537632.

The previous prime is 7681383737. The next prime is 7681383769. The reversal of 7681383751 is 1573831867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7681383751 - 2⁹ = 7681383239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7681383695 and 7681383704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681384751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225923035 + ... + 225923068.

It is an arithmetic number, because the mean of its divisors is an integer number (2033307468).

Almost surely, 2^7681383751 is an apocalyptic number.

7681383751 is a deficient number, since it is larger than the sum of its proper divisors (451846121).

7681383751 is a wasteful number, since it uses less digits than its factorization.

7681383751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451846120.

The product of its digits is 846720, while the sum is 49.

The square root of 7681383751 is about 87643.5037581223. The cubic root of 7681383751 is about 1973.0881462174.

The spelling of 7681383751 in words is "seven billion, six hundred eighty-one million, three hundred eighty-three thousand, seven hundred fifty-one".