7643941057 has 8 divisors (see below), whose sum is σ = 7775949600. Its totient is φ = 7512014304.

The previous prime is 7643941051. The next prime is 7643941079. The reversal of 7643941057 is 7501493467.

7643941057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7643941057 - 2⁷ = 7643940929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7643940998 and 7643941016.

It is not an unprimeable number, because it can be changed into a prime (7643941051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185869 + ... + 223237.

It is an arithmetic number, because the mean of its divisors is an integer number (971993700).

Almost surely, 2^7643941057 is an apocalyptic number.

It is an amenable number.

7643941057 is a deficient number, since it is larger than the sum of its proper divisors (132008543).

7643941057 is a wasteful number, since it uses less digits than its factorization.

7643941057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40895.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 7643941057 is about 87429.6348900074. The cubic root of 7643941057 is about 1969.8770016914.

The spelling of 7643941057 in words is "seven billion, six hundred forty-three million, nine hundred forty-one thousand, fifty-seven".